Denison Mines Corp.
2022  ESG Report
Published on  April 18, 2023
Denison (or the 'Company') is a uranium exploration and development company that embraces Environment, Social and Governance ('ESG') principles in its operations.  

Denison has a long history of uranium mining in Ontario, Saskatchewan and the United States, and is currently positioned to advance the development of various uranium project interests located within the Athabasca Basin region of northern Saskatchewan, Canada.

ACKNOWLEDGEMENT

Denison’s exploration and evaluation operations in Saskatchewan, including its office in Saskatoon and various project interests in northern Saskatchewan, are located in regions covered by Treaty 6, Treaty 8 and Treaty 10, which encompass the traditional lands of the Cree, Dakota, Déne, Lakota, Nakota, Saulteaux, within the homeland of the Métis and within Nuhenéné.

Denison’s flagship Wheeler River Uranium Project is located in northern Saskatchewan within the boundaries of Treaty 10, in the traditional territory of English River First Nation, in the homeland of the Métis, and within Nuhenéné.

Denison’s Closed Mines operations in the Elliot Lake region of northern Ontario are located within the boundaries of the Robinson Huron Treaty of 1850, signatories to which include the Serpent River First Nation.

WHEELER RIVER & IN SITU RECOVERY ('ISR') MINING

Denison has an effective 95% interest in its flagship Wheeler River Uranium Project ('Wheeler River'), which is the largest undeveloped uranium project in the infrastructure-rich eastern portion of the Athabasca Basin region of northern Saskatchewan.

Denison is pioneering the application of the ISR mining method in the Athabasca Basin region, which has the potential to be a modern and environmentally responsible approach to economic uranium mining.  ISR mining involves pumping a liquid mining solution through an orebody to dissolve and recover the uranium.    With ISR, all mining activities are carried out from surface, and there will be no mining shafts or underground mining works, no open pits or major earthworks, as well as no tailings production.

OTHER PROJECT INTERESTS

Denison's other interests in Saskatchewan include a 22.5% ownership interest in the McClean Lake joint venture, which includes several uranium deposits and the operating McClean Lake uranium mill, which is contracted to process the ore from the Cigar Lake mine under a toll milling agreement and has further excess licensed capacity.

Denison also has a 25.17% interest in the Midwest Main and Midwest A deposits, and a 67.41% interest in the Tthe Heldeth Túé ('THT') and Huskie deposits on the Waterbury Lake property.  Each of Midwest Main, Midwest A, THT and Huskie are located within 20 kilometres of the McClean Lake mill.  

Through its 50% ownership of JCU (Canada) Exploration Company, Limited ('JCU'), Denison holds additional interests in various uranium project joint ventures in Canada, including the Millennium project (JCU 30.099%), the Kiggavik project (JCU 33.8118%) and Christie Lake (JCU 34.4508%).  

Denison’s exploration portfolio includes further interests in properties covering ~300,000 hectares in the Athabasca Basin region.

CLOSED MINES

Denison is also engaged in post-closure mine care and maintenance services through its Closed Mines group, which manages Denison's reclaimed mine sites in the Elliot Lake region and provides related services to certain third-party projects.
Disclaimer and Forward Looking Statements
Company Profile
Organizational Profile
Name Denison Mines Corp.
Describe nature of activities, brands, products and services Denison is a uranium exploration and
development company with interests focused
in the Athabasca Basin region of northern
Saskatchewan, Canada.

Denison is also engaged in closed mine care and
maintenance services through its Closed Mines
group, which manages Denison’s Elliot Lake
reclamation projects and provides third-party
services.
Link to Corporate Website https://www.denisonmines.com/
Industry Classification NAICS:
2131 Support activities for mining, and oil and
gas extraction
541620 Environmental consulting services
56291 Remediation services

ISIC:
M7490 Other professional, scientific and
technical activities n.e.c.
Market Capitalization $100 Million up to $1 Billion USD
Type of Operations Exclusively non-producing operations
Company Headquarters Toronto, Canada
ESG Accountability
Role and Name of highest authority within company for Environment, Social and Governance strategy, programs and performance David Cates, President & CEO
ESG Reporting Period
Unless otherwise noted, all data contained in this report covers the following period
From 2022-01-01
To 2022-12-31
Fiscal year end is December 31
Audit Status
Identify the degree to which any inputs of the report are third-party checked Self-Declared
Financial Reporting Period
Specify the frequency of sustainability reporting Annually
Whether Financial reporting period aligns with the period for its sustainability reporting Yes
Specify the contact point for questions about the report or reported information David Cates, President & CEO,  416-979-1991
Geographic Scope of Report
Unless otherwise noted, the data in this report covers ESG matters related to the following countries of operations Canada
Identify notable exclusions, and reference any existing or planned reports that do or will address these (e.g, assets recently divested or acquired, non-managed joint ventures, specific exploration activities, recently closed sites, etc.) This report does not have any notable
geographical exclusions.

This report includes information from
Denison's 28 directly operated properties
located in the provinces of Saskatchewan and
Ontario, including its 26 operated exploration
and evaluation projects in Saskatchewan and its
2 closed mine sites in Elliot Lake, Ontario.
For this reporting period, the majority of
Denison's disclosure centers on the
8  exploration programs conducted in 2022, its
evaluation efforts for its flagship Wheeler River
project and its Closed Mines operations in
Ontario.
Athabasca Map of Denison Properties
Fragile and Conflict-Affected Situations
Identify all of the entity's countries of operations that align with the World Bank's list of "Fragile and Conflict-Affected Situations" None
Business Operations Scope of Report
Identify notable exclusions, and reference any existing or planned reports that do or will address these (e.g, assets recently divested or acquired, non-managed joint ventures, specific exploration activities, recently closed sites, etc.) Denison is reporting on the projects it operates
and not its minority joint ventures interests.
Mineral Resource Types in Scope
Which of the following mineral resource types are covered by this report
   •  Inferred
   •  Indicated
For further information on Denison's mineral
resources, please review the following
information:

Mineral Resources
Mineral Reserve Types in Scope
Which of the following mineral reserve types are covered by this report Probable
For further information on Denison's mineral
resources, please review the following
information:

Mineral Reserves
Currency
Unless otherwise noted, all financial figures referenced in this report are in the following currency CAD
Organizational Profile
Provide a list of externally-developed economic, environmental and social charters, principles, or other initiatives to which the organization subscribes, or which it endorses, e.g., GRI, UN Global Compact For the purposes of this report, we are
disclosing information in adherence to the
following ESG standards:
•     CDP - Carbon Disclosure Project
•     GRI - Global Reporting Initiative
•     GRI Comprehensive - Global Reporting
Initiative - Comprehensive
•     GRI Core - Global Reporting Initiative - Lite
•     GRI MM Supplement - Global Reporting
Initiative - Mining and Metals Supplement
•     ICMM - The International Council on
Mining and Metals
•     ISS - ISS ESG Governance Quality Score
•     ONYEN - Institutional and Investor
Questions
•     SASB - Sustainability Accounting Standards
Board
•     SASB Modified - Sustainability Accounting
Standards Board - Modified
•     UGC - UN Global Compact

The data is compatible with the Task Force on
Climate-Related Financial Disclosures (TCFD)
reporting framework.
Strategy
Provide a description of key impacts, risks, and opportunities, The long-term fundamentals of the uranium
market are directly tied to global acceptance of
nuclear energy.  Nuclear power is seen as a key
component in the pursuit of global
sustainability through carbon neutrality and
the use of clean nuclear energy to reduce global
reliance on fossil fuels while also responding to
increased energy demands.
Denison is positioning itself to become Canada’
s next low-cost and sustainable uranium
producer.

Uranium production by Denison will be
dependent in part on the successful
development of its known ore bodies,
advancement and/or growth of existing
resources and/or discovery of new resources.  

Exploration for minerals and the development
of mineral resources are speculative and
involve significant uncertainties and financial
risks that even a combination of careful
evaluation, experience and technical
knowledge may not fully eliminate.

Development projects are subject to the
completion of successful feasibility studies,
engineering studies and environmental
assessments, the issuance of necessary
governmental permits and the availability of
adequate financing, the completion or
attainment of which are subject to their own
risks and uncertainties.
Provide a statement from the highest governance body or most senior executive of the organization (i.e., CEO, chair, or equivalent senior position) about the relevance of sustainable development to the organization and its strategy for for contributing to sustainable development. (CEO's message for this report) In assessing the potential paths to reduce
carbon emissions, many nations, policymakers,
and interest groups have recognized the critical
role that reliable baseload nuclear power (and
the uranium supply for that power) must play to
achieve decarbonization objectives for a “clean
energy transition”.
Aligned with its focus on becoming Canada's
next uranium producer, Denison has committed
to principles of transparency on ESG-related
matters, externally and internally, and
anticipates this commitment will provide a
competitive advantage.

Please refer to attached document.
Message from Denison's President & CEO
President & CEO - David Cates
Policy commitments
Provide a description of the organization’s policy commitments for responsible business conduct Denison is committed to strong corporate
governance and good corporate citizenship.

We strive for meaningful consultation with
rights holders, communities of interest and
others who may be impacted by our exploration
and development activities.  Denison adopted
its Indigenous Peoples Policy, which reflects
the Company's recognition of the important
role of Canadian business in the process of
reconciliation with Indigenous peoples in
Canada and outlines the Company’s
commitment to take action towards advancing
reconciliation.

Denison also adheres to  its comprehensive
Code of Ethics, Anti-Bribery Policy, Workplace,
Violence and Harassment Policy and
Environment, Health, Safety & Sustainability
Policy.

Please see links below.
Indigenous Peoples Policy

Code of Ethics

Anti-Bribery Policy

Workplace Violence and Harassment Policy

Environment, Health, Safety & Sustainability
Policy
What are (if any) the authoritative intergovernmental instruments that the commitments reference In expressing its intentions in its Indigenous
Peoples Policy, Denison has carefully
considered the standards and principles
articulated by The United Nations Declaration
on the Rights of Indigenous Peoples ('UNDRIP')
and Call to Action 92 from Canada’s Truth and
Reconciliation Commission ('Call to Action 92').
Do the commitments stipulate applying the Precautionary Principle or Approach Yes
Denison's principal policies are approved by the
Company's Board of Directors. As part of the
Board's oversight responsibilities and exercise
of the Precautionary Approach, and in
connection with Denison's Enterprise Risk
Management program, Denison established a
Risk Committee tasked with identifying and
mitigating the risks to, and the potential
impacts of, the Company's activities. The Risk
Committee reports to the Board of Directors
and the Committees of the Board at least twice
per year.
Do the commitments stipulate respecting human rights Yes
Describe the specific policy commitment to respect human rights As articulated in its Code of Ethics,  Denison
operates in jurisdictions known for their
commitments to, and enshrined protections for,
fundamental human rights. Denison requires
adherence to all applicable federal, provincial
and state employment and human rights laws.
In addition, Denison is determined to operate in
a socially responsible way that respects human
rights and manages human rights impacts in its
operations.  Further, Denison respectfully
acknowledges that its business operates in
Canada on lands that are in the traditional
territory of Indigenous peoples.
What are (if any) the internationally recognized human rights that the commitment covers Denison's commitments are broad, and include
the rights of Indigenous peoples and
prohibitions against discrimination on the basis
of race, colour, ethnicity, national origin,
religion, gender, sexual orientation, disability or
age.
Provide links to the policy commitments, if publicly available, or, if the policy commitments are not publicly available, explain the reason for this See links to the Code of Ethics and Indigenous
Peoples Policy provided above.
Report the level at which each policy commitment was approved within the organization, including whether this is the most senior level These policy commitments were approved by
Denison's Board of Directors and made
available to its employees, business partners
and others on its website.
Corporate Governance Resources
Embedding policy commitments
Describe how the organization embeds each of its policy commitments for responsible business conduct throughout its activities and business relationships Denison's policy commitments apply to all of its
operations, including its project exploration
and evaluation activities, regulatory activities
including environmental assessments and
project permitting, and human resource
management.
How are the commitments integrated into organizational strategies, operational policies, and operational procedures The commitments are integrated into, and
sometimes the focus of, elements of its
strategic outlook and planning processes and
enterprise risk management program and is
overseen by all levels of management.
What implementation training does the organization provide Periodic Company-wide training is offered on
certain corporate policies, including Denison's
Code of Ethics.
Material Topics
Governance of Material Topics
Describe the process followed to determine the organization's material topics, including:
i. How has the organization identified actual and potential, negative and positive impacts on the economy, environment, and people, including impacts on their human rights, across its activities and business relationships; provide details
   •  Environmental impact assessment
   •  Other external sources, please list
Denison is privileged to have many experienced
and passionate members of its team, focused on
matters related to the identification of actual
and potential impacts of its operations.  Sources
of that information include, without limitation,
land use studies, environmental baseline
studies and ongoing monitoring.  

In 2022, Denison continued several formal
processes to identify potential impacts of its
operations, including:
•     The environmental assessment process for
the Wheeler River project; and
•     Direct consultation with local and
Indigenous communities.

Denison had also previously completed a
decommissioning environmental assessment
process for Denison's closed mine sites,
pursuant to which it monitors its ongoing post-
closure mine care and maintenance.
ii. How has the organization prioritized the impacts for reporting based on their significance Denison's Board is responsible for identifying
the principal risks of Denison's business,
ensuring management’s implementation and
assessment of appropriate risk management
systems and overseeing the reporting of
material risks.
Management has assessed and prioritized
strategic and operational risks for reporting to
the Board and relevant committees, through its
Enterprise Risk Management program.

An additional top-down assessment of risk and
materiality is performed annually as part of
planning and scoping for Denison’s internal
controls compliance program.

Risk is also identified and assessed
operationally, with business process owners
responsible for assessing, managing and
regularly reporting on risks relevant to the
operations they oversee and ensuring
significant risks are brought to the attention of
senior management as needed and/or through
the Enterprise Risk Management program.
Specify the stakeholders and experts whose views have informed the process of determining its material topics and provide details
   •  Business partners
   •  Employees and other workers
   •  Governments
   •  Local communities
   •  Shareholders and other capital providers
Denison endeavours to maintain open lines of
communication with stakeholders, to enable it
to understand stakeholder concerns and
incorporate those matters into its operational
and risk management systems.   This includes
operational stakeholders (such as local
communities and interested parties with
respect to Denison's projects) and strategic
stakeholders (such as shareholders, with an
interest in Denison's performance and
governance).  Denison also actively engages
experts, such as financial advisors with respect
to financial opportunities and risks and
compensation consultants with respect to
executive and director compensation
benchmarking and risks, to inform Denison's
decision-making and risk identification and
management.
List the organization's material topics
   •  Economic Performance
   •  Market Presence
   •  Indirect Economic Impacts
   •  Compliance
   •  Overall environmental
   •  Environmental Assessment
   •  Occupational Health and Safety
   •  Indigenous Rights
   •  Local Communities
   •  Public Policy
   •  Permitting
List the organization's non-material topics
   •  Procurement Practices
   •  Materials
   •  Energy
   •  Water
   •  Biodiversity
   •  Emissions
   •  Effluents and Waste
   •  Products and Services
   •  Transport
   •  Supplier
   •  Environmental Grievances
   •  Employment
   •  Labor/Management Relations
   •  Training and Education
   •  Diversity and Equal Opportunity
   •  Equal Remuneration for Women and Men
   •  Human Rights Investment
   •  Non-discrimination
   •  Freedom of Association and Collective
Bargaining
   •  Supplier Human Rights Assessment
   •  Human Rights Grievance Mechanisms
   •  Anti-corruption
   •  Anti-competitive Behavior
   •  Supplier Assessment for Impacts on Society
   •  Grievance Mechanisms for Impacts on
Society
   •  Emergency Preparedness
   •  Closure Planning
   •  Marketing
   •  Communications
   •  Materials Stewardship
Provide reason for considering such topics not material, provide details Other, please specify
Owing to Denison’s current stage of
development, many of these considerations are
relevant but not yet applicable to current
operations.  The Company addresses such
matters through principled policies to ensure it
is culturally and procedurally well-positioned
for when the Company progresses to a stage
where certain of these items may become
material.

Other items are not expected to be applicable
to Denison’s business in the near or long-term
given the nature of Denison's planned
operations and the stable and democratic
jurisdiction in which Denison operates, with
comprehensive protections for the
environment, human rights, labour and
employment practices, worker safety, anti-
bribery and anti-corruption, and other matters.
Report changes to the list of material topics compared to the previous reporting period Denison has added a recognition of the
importance of Occupational Health and Safety,
at all stages of operations.
Environment
General Disclosure
Compliance with laws and regulations
Report the total number of significant instances of non-compliance with laws and regulations during the reporting period, and a breakdown of this total by: 0
Number of instances for which fines were incurred 0
Number of instances for which non-monetary sanctions were incurred 0
Report the total number of fines for instances of non-compliance with laws and regulations that were paid during the reporting period 0
Report the monetary value of fines for instances of noncompliance with laws and regulations that were paid during the reporting period ($Million) 0
Total number of fines for instances of non-compliance with laws and regulations that occurred in the current reporting period 0
Total monetary value of fines for instances of non-compliance with laws and regulations that occurred in the current reporting period ($Million) 0
Total number of fines for instances of non-compliance with laws and regulations that occurred in previous reporting periods 0
Total monetary value of fines for instances of non-compliance with laws and regulations that occurred in previous reporting periods 0
Describe the significant instances of non-compliance There have been no significant instances of
non-compliance.

Across Denison's varied operations, the
Company focuses on and maintains compliance
with environmental laws and regulations.
Greenhouse Gas Emissions
Scope 1
For your operations, disclose the gross global Scope1 greenhouse gas (GHG) emissions to the atmosphere of the seven GHGs covered under the Kyoto Protocol (tonne CO₂-e)
Carbon dioxide (CO₂) (tonne CO₂-e) 1,222.713
Methane (CH₄) (tonne CO₂-e) 0.000
Nitrous oxide (N₂O) (tonne CO₂-e) 0.000
Hydrofluorocarbon-23 (CHF₃) (tonne CO₂-e) 0.000
Hydrofluorocarbon-32 (CH₂F₂) (tonne CO₂-e) 0.000
Sulphur hexafluoride (SF₆) (tonne CO₂-e) 0.000
Nitrogen trifluoride (NF₃) (tonne CO₂-e) 0.000
Perfluoromethane (CF₄) (tonne CO₂-e) 0.000
Perfluoroethane (C₂F₆) (tonne CO₂-e) 0.000
Perfluorobutane (C₄F₁₀) (tonne CO₂-e) 0.000
Perfluorohexane (C₆F₁₄) (tonne CO₂-e) 0.000
The total amount of gross global Scope 1 GHG emissions (CO₂-e) (tonne) 1,222.713
The percentage of its gross global Scope 1 GHG emissions that are covered under an emissions-limiting regulation or program that is intended to directly limit or reduce emissions, such as cap-and-trade schemes, carbon tax/fee systems, and other emissions control (e.g., command-and-control approach) and permit-based mechanisms 100.0000%
Canada's federal carbon pricing system is used
in several provinces, including Saskatchewan
and Ontario. Pursuant to Canada's Greenhouse
Gas Pollution Pricing Act, most fuels are subject
to a fuel charge, the rates of which reflect a
carbon pollution price per tonne of CO2e. This
is determined based on global warming
potential factors and emission factors used by
Environment and Climate Change Canada to
report Canada's emissions to the United
Nations Framework Convention on Climate
Change.
The entity shall discuss its long-term and short-term strategy or plan to manage its Scope 1 greenhouse gas (GHG) emissions Denison is planning to monitor and evaluate its
GHG footprint and analyze strategies to set
GHG targets in the coming years, as its
operations grow.

Denison is investing in the research and
development of the ISR mining method for
uranium extraction as part of the feasibility
assessment for its Wheeler River project.  If
successful in achieving production at Wheeler
River, the scope of the Company's operations
(and energy usage) may increase significantly
due to the change in scope attributable to the
transition from evaluation activities to
construction and production.  While the
Company's energy usage may increase
significantly, an increase in GHG emissions may
be partly offset by use of alternative sources of
energy currently scoped for the project, such as
grid electricity.

Overall, the ISR project plan (as currently
scoped in the pre-feasibility study for the
project) is intended to have a lower GHG
project footprint than other conventional
mining methods. Additionally, in scoping its
project evaluation and exploration plans,
Denison is taking into account opportunities for
investment in technologies and equipment to
reduce potential GHG emissions in future
operations.
Carbon Offset
Credits
How much CO₂ (metric tonnes) offset credits were purchased? 0.000
Air Emissions
Report emissions of air pollutants that are released into the atmosphere
Emissions of carbon monoxide, reported as CO (tonne) 0.000
Emissions of oxides of nitrogen (NOx), reported as NOx (tonne) 0.000
Emissions of oxides of sulphur (SOx), reported as SOx (tonne) 0.000
Emissions of Particulate Matter 10 micrometres or less in diameter (PM₁₀), reported as PM₁₀ (tonne) 0.000
Emissions of lead and lead compounds, reported as Pb (tonne) 0.000
Emissions of mercury and mercury compounds, reported as Hg (tonne) 0.000
Emissions of non-methane Volatile Organic Compounds (VOCs) (tonne) 0.000
Energy Management
Total energy consumed in aggregate, in gigajoules (GJ) (hydrocarbons and electricity) including the fuel types used (e.g., biomass, hydro-electric power or bioenergy) 18,491.790
Percentage energy consumed that was supplied by grid electricity 2.4068%
Percentage of energy consumed that is renewable energy Does Not Apply
Water
Efficiency
Proportion of water reused and recycled by the site to reduce the overall consumptive water demand Does Not Apply
Denison's exploration and evaluation
operations draw water to support drilling
programs, as permitted by the Province of
Saskatchewan.   Denison's Closed Mines
operations do not consume water but treat
surface water that is captured on its
decommissioned mine sites and releases that
water back into the environment.
Water Management
Disclose the freshwater withdrawn in locations with High or Extremely High Baseline Water Stress as a percentage of the total water withdrawn Does Not Apply
Denison does not withdraw water from
locations with High or Extremely High Baseline
Water Stress.
Disclose freshwater consumed in locations with High or Extremely High Baseline Water Stress as a percentage of the total water consumed Does Not Apply
Was your organization subject to any fines, enforcement orders, and/or other penalties for water-related regulatory violations No
Total number of instances of non-compliance, including violations of a technology-based standard and exceedances of quality-based standards 0
Waste Management
Disclose the total weight of tailings produced (tonne) 0.000
Denison does not have any direct mineral
processing operations.
Tailings Storage Facilities Management
Does your company manage Tailings Storage Facilities Yes
Denison's Closed Mines operations operate
tailings storage facilities for Denison's closed
mines in Elliot Lake, Ontario.
Provide an inventory of all talings storage facilities (TSFs)
TSF #1: (1) facility name TMA-1
TSF #1: (2) location Canada
TSF #1: (3) ownership status Operator
TSF #1: (4) operational status Closed
TSF #1: (5) construction method Downstream
TSF #1: (6) maximum permitted storage capacity 59,700,000.000
TMA-1 holds tailings from a decommissioned
mining operation, and no further tailings will be
added.
TSF #1: (7) current amount of tailings stored 59,700,000.000
TSF #1: (8) consequence classification Low
TSF #1: (9) date of most recent independent technical review 2022-10-05
TSF #1: (10) material findings No
TSF #1: (11) mitigation measures Not applicable.
TSF #2: (1) facility name TMA-2
TSF #2: (2) location Canada
TSF #2: (3) ownership status Operator
TSF #2: (4) operational status Closed
TSF #2: (5) construction method Downstream
TSF #2: (6) maximum permitted storage capacity 3,300,000.000
TMA-2 holds tailings from a decommissioned
mining operation, and no further tailings will be
added.
TSF #2: (7) current amount of tailings stored 3,300,000.000
TSF #2: (8) consequence classification Low
TSF #2: (9) date of most recent independent technical review 2022-10-05
TSF #2: (10) material findings No
TSF #2: (11) mitigation measures Not applicable.
TSF #3: (1) facility name Stanrock TMA
TSF #3: (2) location Canada
TSF #3: (3) ownership status Operator
TSF #3: (4) operational status Closed
TSF #3: (5) construction method Downstream
TSF #3: (6) maximum permitted storage capacity 5,700,000.000
Stanrock TMA holds tailings from a
decommissioned mining operation, and no
further tailings will be added.
TSF #3: (7) current amount of tailings stored 5,700,000.000
TSF #3: (8) consequence classification Low
TSF #3: (9) date of most recent independent technical review 2022-10-06
TSF #3: (10) material findings No
TSF #3: (11) mitigation measures Not applicable.
Provide a summary of the tailings management systems used to monitor and maintain the structural integrity of tailings facilities and to minimize the risk of a catastrophic failure The inspection of the tailings facilities by an
engineer of record ('EOR') is carried out
annually as part of a care, maintenance, and
surveillance program to ensure the safety and
physical stability of the sites.   The annual
inspection includes a visual inspection of each
tailings facility and a review of instrumentation
data and maintenance work.
Innovation
Spending on Research, Development, and Technologies for waste management compliance and improvement $125,780
Describe nature of spending on Research, Development and Technologies for waste management compliance and improvement In Ontario, Denison's Closed Mines team is
conducting research at Denison TMA-1 on
groundwater flow modeling and radium
removal studies for effective treatment
methods for tailings-impacted water.

In Saskatchewan, Denison's team has
undertaken in-depth scoping studies with
respect to the use of, and effective waste
management for, the ISR mining method
proposed for Wheeler River.  As these efforts
are being carried out as part of integrated
evaluation studies for the project, the R&D
spending on this cannot be reliably captured on
its own.
Biodiversity
Management Plan
List the environmental and biodiversity management plan(s) implemented at active sites Denison has completed an Environmental
Assessment ('EA') for the Wheeler River
project in accordance with the requirements of
both the Canadian Environmental Assessment
Act, 2012 and the Saskatchewan
Environmental Assessment Act.

An EA is a planning and decision-making tool,
which involves predicting potential
environmental effects through each phase of
the project being assessed.  The EA will be
utilized to further develop biodiversity
management and monitoring plans as the
Project progresses through the approval
process. For example, for the Wheeler River
project, Denison undertook baseline data
studies to determine biodiversity.
As of December 2022, Denison operates 26
exploration projects in the Athabasca Basin
region of Northern Saskatchewan. Denison's
investment in environmental monitoring for
Wheeler River will inform similar undertakings
for the exploration and development of
Denison's other properties in the region.

In addition, Denison has entered into
exploration agreements with local communities
in the areas of Saskatchewan in which it
operates, pursuant to which Denison has
committed to engage an independent
contractor, with knowledge of the land and the
exercise of applicable Indigenous and/or treaty
rights thereon, to observe Denison’s activities
and report on any impacts or potential impacts
of such activities to Denison and the applicable
community.   Monitors, selected by leadership
of applicable northern Saskatchewan
Indigenous communities, have conducted site
inspections and reported findings or
recommendations to Denison and their home
community.

For its Closed Mines operations in Elliot Lake,
Ontario, decommissioning and restoration of
Denison's historic mine sites has been
completed, and the Company is engaged in
long-term monitoring. All activities and
monitoring results are reviewed regularly by
the Canadian Nuclear Safety Commission and
the Elliot Lake Joint Regulatory Group, which
consists of federal and provincial regulators.
See the link below for a report on Denison's
Closed Mines operations.

2022 Closed Mines Annual Report
Boreal Shield Habitat Study
Canada jay (Perisoreus canadensis), a common bird found in the Northern Saskatchewan boreal forest
Stream gauging as part of the Wheeler River Project baseline studies
Closed Mines Reclamation  & Biodiversity
A red fox (Vulpes vulpes), a frequent visitor at the Wheeler River camp
1.1 Mine lifecycle stages to which the plan(s) apply
   •  Exploration and appraisal
   •  Site development
   •  Restoration
1.2 The topics addressed by the plan(s)
   •  Ecological and biodiversity impacts
   •  Waste generation
   •  Noise impacts
   •  Discharges to water
   •  Natural resource consumption
   •  Hazardous chemical usage
1.3 The underlying references for its plan(s), including whether they are codes, guidelines, standards, or regulations; whether they were developed by the entity, an industry organization, a third-party organization (e.g., a non-governmental organization, a governmental agency, or some combination of these groups) Denison's management programs and
procedures are in compliance with applicable
provincial regulations on biodiversity
management.

For the Wheeler River project, the EA was
completed in accordance with the
requirements of both the Canadian
Environmental Assessment Act, 2012 and the
Saskatchewan Environmental Assessment Act.

The Closed Mines operations are operating in
compliance with federal and provincial licenses,
which reflect the 1995 Decommissioning
Environmental Impact Assessment of the
Denison and Stanrock Mining Areas in Elliot
Lake, Ontario.
Impacts
Does access to the site involve traversing a protected area No
None of the 26 mineral exploration and
development properties Denison operates in
Saskatchewan, nor the Closed Mines
operations, require traversing a protected area.
Do any of the entities concessions share a watershed with a protected area No
Provide context and description of site access involving traversing protected areas, and/or watersheds shared with a protected area. Include reference to measures in place to assure access, any proactive programs to support the biodiversity of the protected area, and any formal complaints or compliance issues and related steps to resolve Access to Denison-operated projects in
Saskatchewan are by road or air from
Saskatoon. Vehicle access is primarily through
the provincial highway system which is
connected to the projects through access roads
that do not traverse protected areas or critical
habitats.
Denison's Closed Mines operations are in close
proximity to the town of Elliot Lake, Ontario
and direct access to the sites does not traverse
protected areas or critical habitats.
Denison's Operations are Outside Saskatchewan Protected Areas
Percentage of proved reserves in sites with protected conservation status or in areas of endangered species habitat Does Not Apply
Percentage of probable reserves in sites with protected conservation status or in areas of endangered species habitat 0.0000%
Percentage of inferred, indicated and/or measured resources in sites with protected conservation status or in areas of endangered species habitat 0.0000%
Social
Scale of the Organization
Report the total number of operations 3
This is defined as Denison's (1) project
exploration and evaluation operations in
Saskatchewan, (2) its Closed Mines operations
in Elliot Lake, Ontario and (3) its head office in
Toronto, Ontario.
Employment
Scale of the Organization
Report the total number of direct employees worldwide (exclude contractors) 76
Report the total number of male direct employees worldwide (exclude contractors) 47
Report the total number of female direct employees worldwide (exclude contractors) 29
Female employees and contractors as percentage of total employees and contractors 38.1579%
Male employees and contractors as percentage of total employees and contractors 61.8421%
Total number of non-binary employees and contractors worldwide 0
Non-binary employees and contractors as percentage of total employees and contractors 0.0000%
Total number of employees and contractors with gender not disclosed 0
Employees and contractors with gender not disclosed as percentage of total employees and contractors 0.0000%
Employee Information
Report the total number of direct employees by employment type (permanent and temporary), by gender 76
Total number of permanent employees 68
As at December 31, 2022.
Total number of permanent employees - female 29
Total number of permanent employees - male 39
Total number of permanent employees - Non-binary 0
Total number of permanent employees - Gender not disclosed 0
Total number of temporary employees 8
Total number of temporary employees - female 0
Total number of temporary employees - male 8
Total number of temporary employees - Non-binary 0
Total number of temporary employees - Gender not disclosed 0
Report the total number of non-guaranteed hours employees by gender 0
Report the total number of employees by employment type (full-time and part-time), by gender 76
Report the total number of full-time employees 62
Report the total number of part-time employees 14
Total number of full-time employees - female 26
Total number of part-time employees - female 3
Total number of full-time employees - male 36
Total number of part-time employees - male 11
Total number of full-time employees - Non-binary 0
Total number of part-time employees - Non-binary 0
Total number of full-time employees - Gender not disclosed 0
Total number of part-time employees - Gender not disclosed 0
Describe the methodologies and assumptions used to compile the data Employee data is collected from information
collected during the hiring process, voluntary
internal surveys, and our internal organization
systems.
Are the numbers reported in head count, full-time equivalent (FTE), or using another methodology Employee numbers are reported by head count.
Are the numbers reported at the end of the reporting period, as an average across the reporting period, or using another methodology The numbers provided for the employee counts
in this report are reported as at a "point-in-
time" reference at the end of the Company's
reporting period, December 31, 2022.
Provide contextual information necessary to understand the employment information provided The majority of the Company's employees are
employed on a full-time, permanent basis.  Part-
time positions are engaged for various reasons,
such as the seasonal nature of a position, an
employee's own preferences, or other
circumstances surrounding the nature of the
position or the employee.

The Company's male:female employee ratio as
at December 31, 2022 (as compared to the
prior year) was impacted by the creation of
eight (8) new field positions in Northern
Saskatchewan which were predominantly
applied for and filled by male candidates.
Describe significant fluctuations, if any, in the number of employees during the reporting period and between reporting periods The Company hires seasonal employees and
engages in seasonal contracts, to support active
field operations for its exploration and
evaluation activities.  These will fluctuate by
season and by year, based upon the scope of
the Company's activities.
Turnover
Report the total number and rate of employee turnover during the reporting period, by age group, and gender
All Employees
Total number of turnover (the number that left during the period) 13
The high rate of turnover in 2022 was a result
of departures from the Company's Closed
Mines group:  8 of the 13 reported departures
were Closed Mines employees.  The Closed
Mines group has an aging workforce, and 4 of
the 8 departures in 2022 were by individuals
close to retirement.  The Company has been
filling these vacant positions with younger
employees to ensure better balance of age
diversity in our workforce and continuity of
staff for the Closed Mines group.
Rate of turnover 19.2593%
Female employees
Total number of turnover (the number of females that left during the period) 8
Rate of turnover, females 28.5714%
Male employees
Total number of turnover (the number of males that left during the period) 5
Rate of turnover, males 12.8205%
Non-binary employees
Total number of turnover (the number non-binary that left during the period) 0
Rate of turnover, non-binary Does Not Apply
Turnover & Age Breakdown
Employees aged 30 years old and under
Total number of turnover (the number that left during the period) 1
As percent of total employees 11.8421%
Rate of turnover 14.2857%
Employees aged between 30 and 50 years old
Total number of turnover (the number that left during the period) 8
As percent of total employees 61.8421%
Rate of turnover 18.8235%
Employees over 50 years old
Total number of turnover (the number that left during the period) 4
As percent of total employees 26.3158%
Rate of turnover 22.2222%
Identify types of employees captured in the turnover rate calculations Other, please specify
Permanent employees (excluding temporary
workers).
Average age of employees 44
Diversity and Equal Opportunity
Report the percentage of employees per employee category in each of the following diversity categories
Board of Directors
Total Board of Directors 8
Percent Male 62.5000%
Percent Female 37.5000%
Percent Non-Binary 0.0000%
Percent under 30 years of age 0.0000%
Percent between 30 and 50 years of age 25.0000%
Percent over 50 years of age 75.0000%
Senior Management
Total Senior Managers 6
Percent Male 66.6667%
Percent Female 33.3333%
Percent Non-Binary 0.0000%
Percent under 30 years of age 0.0000%
Percent between 30 and 50 years of age 66.6667%
Percent over 50 years of age 33.3333%
Salaried (excluding Senior Management)
Total Salaried (excluding Senior Management) 52
Percent Male 55.7692%
Percent Female 44.2308%
Percent Non-Binary 0.0000%
Percent under 30 years of age 5.7692%
Percent between 30 and 50 years of age 75.0000%
Percent over 50 years of age 19.2308%
Technical Employees (skilled hourly)
Total Technical Employees 13
Percent Male 76.9231%
Percent Female 23.0769%
Percent Non-Binary 0.0000%
Percent under 30 years of age 38.4615%
Percent between 30 and 50 years of age 46.1538%
Percent over 50 years of age 15.3846%
Production Employees (unskilled hourly)
Total Production Employees 5
Percent Male 80.0000%
Percent Female 20.0000%
Percent Non-Binary 0.0000%
Percent under 30 years of age 20.0000%
Percent between 30 and 50 years of age 0.0000%
Percent over 50 years of age 80.0000%
Labour Relations
Collective Bargaining Agreements
Percentage of total direct employees covered by collective bargaining agreements 0.0000%
Occupational Health and Safety
Work-related Injuries
Injuries - For all employees
i. Number of fatalities as a result of work-related injury 0
i. Rate of fatalities resulting from work-related injury. Note: calculating per 200,000 hours worked 0.000
ii. Number of high-consequence work-related injuries (excluding fatalities) 0
ii. Rate of high-consequence work-related injuries (excluding fatalities) 0.000
iii. Number of recordable work-related injuries 1
iii. Rate of recordable work-related injuries 1.494
iv. Main types of work-related injury, e.g., confined space, trips, falls, etc. Eye abrasion requiring prescription-grade
medication to prevent infection.
v. Number of hours worked 133,907
Lost Time Injuries (LTIs) 0
Lost Time Injuries Rate (LTIR) 0.000
Injuries - workers who are not employees but whose work and/or workplace is controlled by the organization
i. Number of fatalities as a result of work-related injury 0
i. Rate of fatalities resulting from work-related injury. Note: calculating per 200,000 hours 0.000
ii. Number of high-consequence work-related injuries (excluding fatalities) 0
ii. Rate of high-consequence work-related injuries (excluding fatalities) 0.000
iii. Number of recordable work-related injuries 1
iii. Rate of recordable work-related injuries 3.541
iv. Main types of work-related injury, e.g., confined space, trips, falls, etc. Laceration to finger requiring sutures.
v. Number of hours worked 56,481
Lost Time Injuries (LTIs) 0
Lost Time Injuries Rate (LTIR) 0.000
Combined (Employees and non-employees, but controlled by the organization):
Total Hours Worked 190,388
Total number of all work-related injuries 2
Rate of work-related injuries 2.101
Total Lost Time Injuries (LTIs) 0
Lost Time Injuries Rate (LTIR) 0.000
Report the work-related hazards that pose a risk of high-consequence injury, including
i. How have these hazards been determined Denison has identified the following activities
as potentially high-consequence in its
operations:

1. Working alone
2. Loading equipment onto trucks and trailers
3. Working with, or in the vicinity of, heavy
equipment
4. Radiation exposure
5. Highway driving
6. Working with chemicals
7. Working with explosive devices, as
applicable
ii. Which of these hazards have caused or contributed to high-consequence injuries during the reporting period None of the aforementioned hazards
contributed to an injury in this reporting period.
iii. Actions taken or underway to eliminate these hazards and minimize risks using the hierarchy of controls Denison has successfully implemented safety
training and procedures to minimize the risks of
the identified hazards.

Denison has an implemented a Radiation
Protection Plan that has been approved by the
Canadian Nuclear Safety Commission.
Report on actions taken or underway to eliminate other work-related hazards and minimize risks using the hierarchy of controls Operational policies are constantly reviewed
by Denison's Health & Safety Manager and the
Company's health and safety committees, with
a goal of eliminating work-related hazards,
formalizing PPE requirements, and conducting
competency assurance, hazard assessments,
and Hazard and Operability Studies.
Whether and, if so, why any workers have been excluded from this disclosure, including the types of worker excluded, e.g., short-term contractors Denison did not track incidents by short-term
contractors, as these individuals in most cases
were not directly supervised by Denison or able
to participate in Denison's health and safety
training and reporting practices.
Safety Training
Disclose the average number of training hours provided to its workforce for health, safety, and emergency management training
Average hours of health, safety, and emergency response training for (a) full-time/direct employees 9.91
Security, Human Rights and Rights of Indigenous People
Identify the countries of operations within the World Bank's list of “Fragile and Conflict-Affected Situations” None
Describe the nature of any social risks, for all operating countries, that could have a material risk to operations Denison’s relationships with communities of
interest are critical to ensure the future success
of its existing operations and the construction
and development of its projects.   Managing
relations with the local First Nations and Métis
communities is a matter of paramount
importance to Denison.
Engagement with, and consideration of other
rights of, potentially affected Indigenous
peoples may require accommodations,
including undertakings regarding funding,
contracting, environmental practices,
employment and other matters and could affect
the timetable and costs of exploration,
evaluation and development of Denison’s
projects.
Percentage of proved reserves that are located in or near areas of active conflict Does Not Apply
The total amount of proved reserves 0
Percentage of probable reserves that are located in or near areas of active conflict 0.0000%
The total amount of probable reserves 103,900,000
Denison's share of pounds of uranium
concentrates (U3O8), on Denison-operated
projects.

Please refer to the "Prefeasibility Study Report
for the Wheeler River Uranium Project
Saskatchewan, Canada” dated October 30,
2018  and Denison's Annual Information Form
dated March 27, 2023 for more information.
Percentage of inferred, indicated and measured resources that are located in or near areas of active conflict 0.0000%
Total amount of inferred, indicated and/or measured resources 140,700,000
Denison's share of pounds of uranium
concentrates (U3O8) on Denison's operated
projects (Wheeler River and Waterbury Lake)
are comprised of:
- Indicated mineral resources:  134,100,000 lbs
U3O8
- Inferred mineral resources:  6,600,000 lbs
U3O8

Please refer to the following reports, available
on Denison's website, for more information:
- Denison's Annual Information Form dated
March 27, 2023;
- "Prefeasibility Study Report for the Wheeler
River Uranium Project Saskatchewan, Canada”
dated October 30, 2018 ; and/or
- "Preliminary Economic Assessment for the
Tthe Heldeth Túé (J Zone) Deposit, Waterbury
Lake Property, Northern Saskatchewan,
Canada” effective October 30, 2020.
Percentage of proved reserves that are located in or near areas that are considered to be indigenous peoples’ land Does Not Apply
The total amount of proved reserves 0
Percentage of probable reserves that are located in or near areas that are considered to be indigenous peoples’ land 100.0000%
Denison respectfully acknowledges that our
business operates in Canada on lands that are
in the traditional territory of Indigenous
peoples.  Denison’s exploration and evaluation
operations in Saskatchewan, including its office
in Saskatoon and various project interests in
northern Saskatchewan, are located in regions
covered by Treaty 6, Treaty 8 and Treaty 10,
which encompass the traditional lands of the
Cree, Dakota, Déne, Lakota, Nakota, Saulteaux,
within the homeland of the Métis and within
Nuhenéné.  Denison’s Closed Mines operations
in the Elliot Lake region of northern Ontario are
located within the boundaries of the Robinson
Huron Treaty of 1850, signatories to which
include the Serpent River First Nation.
The total amount of probable reserves 103,900,000
Denison's share of pounds of uranium
concentrates (U3O8).
Percentage of inferred, indicated and measured resources that are located in or near areas that are considered to be indigenous peoples’ land 100.0000%
Denison respectfully acknowledges that our
business operates in Canada on lands that are
in the traditional territory of Indigenous
peoples.  Denison’s exploration and evaluation
operations in Saskatchewan, including its office
in Saskatoon and various project interests in
northern Saskatchewan, are located in regions
covered by Treaty 6, Treaty 8 and Treaty 10,
which encompass the traditional lands of the
Cree, Dakota, Déne, Lakota, Nakota, Saulteaux,
within the homeland of the Métis and within
Nuhenéné.  Denison’s Closed Mines operations
in the Elliot Lake region of northern Ontario are
located within the boundaries of the Robinson
Huron Treaty of 1850, signatories to which
include the Serpent River First Nation.
Total amount of inferred, indicated and measured resources 140,700,000
pounds of uranium concentrates (U3O8) on
Denison's operated projects (Wheeler River
and Waterbury Lake), comprised of:
- Indicated mineral resources:  134,100,000 lbs
U3O8
- Inferred mineral resources:  6,600,000 lbs
U3O8
Describe due diligence practices and procedures with respect to indigenous rights of communities in which it operates or intends to operate Denison follows best practices for early
engagement with Indigenous communities
regarding regulatory and permit applications,
ensuring that Denison is informed of any
questions or concerns related to the rights and
interests of Indigenous communities prior to
project commencement.  Denison has been
identified as "best in class" in relation to
engagement with communities by the Province
of Saskatchewan.

Denison's process includes ensuring Indigenous
communities have the capacity to meaningfully
participate.  Denison's intentions are expressed
in its Indigenous Peoples Policy, which reflects
Denison's recognitions of the important role of
Canadian business in the process of
reconciliation with Indigenous peoples in
Canada and outlines the Company's
commitment to taking action toward advancing
reconciliation.
Denison’s approach has also been formalized
through various agreements for both the
exploration and development project stages.  In
addition to agreements signed in previous
years, in 2022, Denison signed:

- The Exploration Agreement with Kineepik
Métis Local #9 of Pinehouse Lake;
- The Exploration Agreement with Ya'thi Néné
Lands and Resources Office ("YNLR"), the
Athabasca Nations, and the Athabasca
Communities; and
- The Capacity Funding Agreement with Métis
Nation - Saskatchewan.

Even where there is no formalized agreement
with an Indigenous community, Denison offers
a proactive process with capacity support to
encourage participation.

Indigenous Peoples Policy
Discuss practices and list procedures while operating in areas of conflict Denison does not operate in areas of conflict.
Community Relations
Artisanal and Small-Scale Mining
Number of company operating sites where artisanal and small-scale mining (ASM) takes place on, or adjacent to, the site (not controlled by company/unauthorized) 0
Percentage of company operating sites where artisanal and small-scale mining (ASM) takes place on, or adjacent to, the site Does Not Apply
Report the associated risks and the actions taken to manage and mitigate these risks Denison does not have operations in or
adjacent to artisanal and small-scale mining
operations.
Programs
Report on community relations programs, objectives and achievements in the past 3 years Denison’s focus on community relations
programs is to ensure open communication and
information sharing as well as the support of
community-led initiatives that focus on
community wellness.
The program is commensurate with the size
and scale of Denison, with the intention to scale
up over time as Denison grows.  

See the attached "Denison Corporate Social
Responsibility" for details of our programs and
2022 activities.
Denison Corporate Social Responsibility
Commemorating Treaty Days at Patuanak Reserve, located within the boundaries of Treaty 10, and within the Ancestral Lands of the English River First Nation, July, 2022
Signing of Exploration Agreement between Kineepik Métis Local and Denison Mines at Pinehouse Elders Gathering, June, 2022
Signing of Exploration Agreement between the Athabasca First Nations, the Athabasca communities, the Ya’thi Néné Lands and Resources Office and Denison Mines in Prince Albert, Saskatchewan, October, 2022
Denison staff connecting together to learn and reflect on Canada’s National Day for Truth and Reconciliation, September, 2022
Discuss the processes, procedures, and practices to manage risks and opportunities associated with the rights and interests of communities in areas where it conducts business Denison’s focus on community relations
programs is to ensure open communication and
information sharing as well as the support of
community-led initiatives that focus on
community wellness.

A foundational element of Denison’s
Indigenous relations strategy is the execution
of exploration agreements with local
communities in the areas of Saskatchewan in
which it operates.   The agreements
are  considered to be first-of-a-kind in
Saskatchewan.

At a high-level, the agreements establish a
framework for a cooperative and mutually
beneficial relationship between the parties,
which respects and is informed by the rights
and interests of the Indigenous nations and
communities who are parties to the
agreements, while supporting Denison’s
exploration and evaluation activities in the
applicable areas. The exploration agreements
each provide a basis for predictable
information-sharing and permitting, with an
emphasis on environmental protection and
monitoring, support for community
development initiatives and the sharing of
benefits.

With respect to its Closed Mines operations,
Denison prepares annual newsletters for the
community, to ensure transparency.
2022 Closed Mines Newsletter
Risks and Opportunities
Disclose the total number of site shutdowns or project delays due to non-technical factors 0
Disclose the total aggregate duration (in days) of site shutdowns or project delays due to non-technical factors 0
Governance
Climate Change
Oversight
Is there board-level oversight of climate-related issues within your organization Yes
The Board of Directors has ultimate oversight
of climate-related issues.  The Board has given
each of the Committees a mandate which
includes the oversight of risk relevant to their
area of responsibility, and such Committees
report to the Board.
Responsibility
Provide the highest management-level position(s) or committee(s) with responsibility for climate-related issues Risk committee
Denison's Risk Committee was established to
oversee risk reporting to the Board and its
Committees.  The Risk Committee is comprised
of Denison's Executive Vice President & Chief
Financial Officer, its Vice President Legal, and
its Director Internal Audit and Risk.
Nature of primary responsibility Both assessing and managing climate-related
risks and opportunities
Reporting
Frequency of reporting to the board on climate-related issues Half-yearly
In 2022, management reported periodically on
risk-related matters as part of its Enterprise
Risk Management program.
Incentives
Do you provide incentives for the management of climate-related issues, including the attainment of targets Other, please specify
Denison's program for assessing and managing
climate-related risks and opportunities is
focused on matters likely to impact its
operations and industry, commensurate for the
stage of its operations.  As Denison is primarily
engaged in exploration and development in the
Athabasca Basin of Northern Saskatchewan,
with no steady-state production or other
material operations, the Company’s most
significant climate-related issues are largely
related to the operation of remote camp sites in
areas susceptible to forest fires (which can be
adversely impacted by climate change
phenomenon).  The Company’s incentives
around health and safety performance capture
this type of climate-related risk and set targets
for safe operation of sites (including forest fire
preparedness).
Risk and Opportunity Management
Does your organization have a process for identifying, assessing, and responding to climate-related risks and opportunities Yes
Risk Assessments
Have you identified any inherent climate-related risks with the potential to have a substantive financial or strategic impact on your business Yes
The Company has identified that forest fires
(the likelihood and scope of which may be
impacted by climate change) could have a
substantive financial or strategic impact on its
operations, due to the location and remoteness
of Denison's exploration and Closed Mines
operational sites.  In addition, extreme water
levels caused by climate change could
negatively impact Closed Mines care and
maintenance operations.  The evaluation of
other climate-related risks remains ongoing.
Provide details of identified risks in your direct operations with the potential to have a substantive financial or strategic impact on your business, and your response to those risks
Risk 1
Where in the value chain does the risk driver occur Direct operations
Risk type and primary driver Acute Physical - Increased likelihood and
severity of wildfires
Time horizon of risk Short-term
Likelihood of impact About as likely as not
Magnitude of impact Medium-low
Primary potential financial impact Decreased asset value or asset useful life
leading to write-offs, asset impairment or early
retirement of existing assets
Risk 2
Where in the value chain does the risk driver occur Direct operations
Risk type and primary driver Acute Physical - Increased severity and
frequency of extreme weather events such as
cyclones and floods
Time horizon of risk Short-term
Likelihood of impact About as likely as not
Magnitude of impact Medium-low
Primary potential financial impact Decreased asset value or asset useful life
leading to write-offs, asset impairment or early
retirement of existing assets
Risk 3
Where in the value chain does the risk driver occur Upstream
Risk type and primary driver Reputation - Stigmatization of sector
Time horizon of risk Short-term
Likelihood of impact More likely than not
Magnitude of impact Medium
Primary potential financial impact Other, please specify
Opportunity Assessments
Have you identified any climate-related opportunities with the potential to have a substantive financial or strategic impact on your business Other, please specify
Denison has identified the most significant
opportunity for Denison's business being the
potential to become a uranium producer during
a period of strong increased support globally
for nuclear energy's role in a clean energy
transition.
Strategy
Have climate-related risks and opportunities influenced your organization’s strategy and/or financial planning Yes
Uranium mined in Canada is used exclusively
for the production of nuclear energy, which is a
reliable and low-cost source of carbon-free
electricity.  

Energy consumption around the world is
increasing rapidly.  The Intergovernmental
Panel on Climate Change (an
intergovernmental body of the United Nations),
in its four principle decarbonization pathways,
calls for an increase in nuclear power by
between 98% and 501% to produce carbon-
free electricity and avoid catastrophic climate
impacts.

This demand for nuclear energy requires
significant supply of uranium to create that
energy.

Despite years of low uranium prices, Denison
has been able to advance its assets in Canada in
recent years and is positioned to meet future
demands for uranium with the development of
its uranium projects in Saskatchewan.

Denison is striving to become a low-cost
producer of uranium, with methods that will
meet the highest regulatory standards, to
become a significant source of supply for
critical nuclear power generation.  

Successfully executing this strategy has the
potential to have a substantive financial benefit
for Denison and its shareholders.
Water Management
Quality and Quantity Dependency
Rate the importance (current and future) of freshwater quality and quantity to the success of your business
Direct use importance rating Not very important
Indirect use importance rating Not important at all
Rate the importance (current and future) of sufficient quantity of recycled, brackish and/or produced water for the success of your business
Direct use importance rating Have not evaluated
Indirect use importance rating Have not evaluated
Risk Assessments
Does your organization undertake a water-related risk assessment Yes, water-related risks are assessed
For example, our Closed Mines team conducts
on-going environmental monitoring, including
monitoring of surface water, groundwater,
pond water, sediment, seepage, and benthic
invertebrates. Monitoring results are reported
annually to regulators and are publicly
available.
Select the options that best describe your procedures for identifying and assessing water-related risks
i. Coverage Partial
Denison has procedures for identifying and
assessing water-related risks.  For the Wheeler
River project, baseline studies and predictive
analysis have been completed as part of the
Environmental Assessment process for that
project.

For the Closed Mines operations, water-related
risks are being actively monitored, in line with
the  Decommissioning Environmental
Assessment (EA) for the Denison and Stanrock
closed mine sites.
ii. Risk Assessment Procedure Water risks are assessed in an environmental
risk assessment
iii. Frequency of Risk Assessment Other, please specify
For the Wheeler River project, baseline studies
and predictive analysis have just been
developed in connection with the
Environmental Assessment process for that
project, and will be reviewed, revised and
renewed as appropriate.

For the Closed Mines operations, the risk
assessment in line with the Decommissioning
Environmental Assessment are completed
every 5 years.
iv. How far into the future are risks considered Other, please specify
The risk is numerically modelled out for 1,000
years in the Decommissioning Environmental
Assessment for Denison's closed mines.
Have you identified any inherent water-related risks with the potential to have a substantive financial or strategic impact on operations No
Opportunity Assessments
Have you identified any water-related opportunities with the potential to have a substantive financial or strategic impact on your business No
Responsibility
Provide the highest management-level position(s) or committee(s) with responsibility for water-related issues Other Committee, please specify
The Environment, Heath, Safety and
Sustainability Committee of the Board
oversees material matters related to the
environment, which include water-related
issues as applicable.
Policy
Does your organization have a documented water policy No
Denison does not operate in water-stressed
areas or with methods that consume material
volumes of water.
Select the options that best describe the scope and content of your organizations' water policy None
Reporting
Frequency of reporting to the board on water-related issues As important matters arise
Incentives
Do you provide incentives to C-suite employees or board members for the management of water-related issues Yes
The Company’s incentives around health and
safety performance capture matters related to
environmental impacts of operations, including
water-related issues as applicable.
Strategy
Are water-related issues integrated into any aspects of your long-term strategic business plan Yes, water-related issues are integrated
If water-related issues are integrated into any aspects of your long-term strategic business plan, please describe further Water-related issues are a component of the
EA for Denison's flagship Wheeler River.  The
potential development of Wheeler River is the
principal focus of Denison's current operations
and medium to long-term strategic business
plan, and the EA is an integral component of the
project evaluation efforts.

In addition, water-related matters, including
monitoring and water treatment, are integral to
Denison's Closed Mines operations.
If water-related issues are integrated into any aspects of your long-term strategic business plan, identify the associated long-term time horizon 5-10 years
General Disclosure
Governance structure and composition
Describe its governance structure, including committees of the highest governance body; e.g., the Board of Directors, the Executives, the Board Environment Committee, Board Safety Committee, the Advisory Committee, etc. The Board of Directors of Denison is
responsible for the stewardship of
the Company, oversight of the management of
the business and affairs of the Company and
performing such duties as may be required by
applicable legislation and regulations.
In 2022, the Board consisted of 8 members and
had 5 committees:  
•     Audit
•     Compensation
•     Corporate Governance & Nominating
•     Environment, Health, Safety &
Sustainability
•     Technical

For more information on Governance, please
refer to Denison's website and to the attached
2022 organizational chart.

Corporate Governance
Board & Management Organizational Chart 2022
List the committees of the highest governance body that are responsible for decisionmaking on and overseeing the management of the organization’s impacts on the economy, environment, and people; e.g., the Board of Directors, the Executives, the Board Environment Committee, Board Safety Committee, the Advisory Committee, etc The Board has delegated primary oversight to
its Committees, who then report to the
Board.  For example, the Audit Committee
reviews certain financial and economic matters;
the Environment, Health, Safety &
Sustainability  Committee oversees
management of environmental and other social
topics; and the Corporate Governance &
Nominating Committee oversees most
governance matters.
Delegation of responsibility for managing impacts
Describe whether the highest governance body has appointed any senior executives with responsibility for the management of organization’s impacts on the economy, environment, and people e.g., is it part of the Governance structure of the company, the CFO or internal audit reporting to the Board Yes
Denison's President & CEO, David Cates is
ultimately responsible for economic,
environmental and social topics related to
Denison, as supported by the rest of the
management team.
Describe whether the highest governance body has delegated responsibility for the management of impacts to other employees; Denison's President & CEO regularly reports
on material matters to the Board, in quarterly
updates and otherwise as deemed appropriate.

The management team reports to the President
& CEO and, where appropriate, directly to the
Committees of the Board responsible for
oversight of ESG-related matters (such as the
CFO reporting to the Audit Committee and the
Vice President Legal reporting to the
Corporate Governance & Nominating
Committee).
Consultation Process
Report the processes for consultations between stakeholders and the highest governance body on economic, environmental and social topics, e.g., for most mining companies it would be the executives and operations and not the Board, and if delegated, explain how Communications with interested parties occur
on a regular basis and material matters are
reported to the Board at least quarterly.

Denison works to ensure effective
communication between the Company, its
shareholders and other interested parties, who
are encouraged to reach out directly
to  management and/or the Board, to
communicate any questions or
concerns.  Denison regularly receives and
responds to such inquiries.

The Board monitors all the policies and
procedures that are in place to ensure a strong,
cohesive, sustained and positive image of the
Company with shareholders, governments and
the public generally.
Governance structure and composition
Describe the composition of the highest governance body and its committees by
Number of executive members 1
Number of non-executive members 7
Number of independent members 6
Less than 3 years of tenure of members on the governance body 4
3-6 years of tenure of members on the governance body 2
6-9 years of tenure of members on the governance body 0
More than 10 years of tenure of members on the governance body 2
Number of other significant positions and commitments held by each member, and the nature of the commitments As of December 31, 2022, the Board was
comprised of 8 members:  Mses. Sterritt, Traub
and Volker and Messrs. Cates, Edgar,
Hochstein, Jeong, and Neuburger.
Effective March 9, 2023, Mr. Jeong resigned
from the Board and Mr. An was appointed to fill
his vacancy.  See attached excerpt of certain
profile details as at March 27, 2023 for
Denison's current directors:  Mses. Sterritt,
Traub and Volker and Messrs. An, Cates, Edgar,
Hochstein, and Neuburger.
March 2023 Director Profiles
Number of Male governance body members 5
Number of Female governance body members 3
Number of members from under-represented social groups 0
Description of competencies relating to economic, environmental, and social topics The Corporate Governance & Nominating
Committee of the Board ('CGN Committee')
maintains a competency matrix, reviewed
annually, to assess composition of the Board
and its committees and ensure it has an
appropriate mix of skills and experience to
govern effectively and be a strategic resource
for the Company.
Please refer to the attached Skills Matrix for
further details of the 2022 skills assessment.
2022 Directors Skills Assessment
Description of stakeholder representation Denison is a party to a strategic relationship
agreement with KHNP Canada Energy Ltd.,
which sets forth the terms of a long-term
collaborative business relationship first
established in 2009.  So long as KHNP Canada
or an affiliate holds more than 5% of Denison's
outstanding common shares, the Board must
nominate one person designated by KHNP
Canada or its affiliate for election as a director
at any shareholder meeting where directors are
to be elected.

In 2022, Mr. Yun Chang Jeong was designated
by KHNP Canada as its nominee.  Effective
March 9, 2023, Mr. Yun Chang Jeong resigned
from the Board and Mr. Byeong Min An was
appointed to fill his vacancy as KHNP Canada's
nominee.
Board Diversity
Do you have a diversity policy and if so, provide details, link to the policy or attach the file Denison's Diversity Policy is attached.
Diversity Policy
Chair of the highest governance body
Is the chair of the highest governance body is also a senior executive in the organization No
Conflicts of Interest
Describe the processes for the highest governance body to ensure that conflicts of interest are prevented and mitigated The Board takes steps to ensure directors
exercise independent judgment in considering
transactions and agreements in respect of
which a director or executive officer may have
a material interest.
Such steps have included the adoption of the
Code of Ethics, which provides examples of
conflicts of interests and outlines the
procedure to be followed in situations that
present an actual or potential conflict of
interest (including reporting such conflict or
potential conflict to the Chair of Denison’s
Audit Committee).

Code of Ethics
Denison's Approach to Management of Conflicts of Interest
Report whether conflicts of interest are disclosed to stakeholders, including, as a minimum, conflicts of interest relating to Yes
If there were instances of conflicts of interest in
material transactions, such matters would be
disclosed as appropriate.
Cross-board membership Yes
Cross-shareholding with suppliers and other stakeholders Yes
Existence of controlling shareholder Yes
Related parties, their relationships, transactions, and outstanding balances Yes
Collective knowledge of highest governance body
Report measures taken to advance the collective knowledge, skills, and experience of the highest governance body on sustainable development., e.g., board training The Board engages in regular director
education.  In 2022, all of the directors were in
attendance for a presentation by
representatives of Willson Advisory and
OMNIA Advisors on the topic of enterprise risk
management.

The Board also encourages directors and senior
management to participate in appropriate
professional and personal development
activities, courses and programs, and supports
management’s commitment to the training and
development of all permanent employees.
Evaluation of Highest Governance Body
Describe actions taken in response to the evaluations, including changes to the composition of the highest governance body and organizational practices The CGN Committee is responsible for
overseeing the evaluation of the Board,
committees of the Board and the contribution
of individual directors, including their
performance with respect to governance of
economic, environmental, and social topics.  

In response to external evaluations, the CGN
Committee and the Board have championed
changes to Denison's governance practices,
such as increased Board diversity and
enhanced transparency in its corporate filings.
Transparency
Describe the role of the highest governance body and of senior executives in developing, approving, and updating the organization’s purpose, value or mission statements, strategies, policies, and goals related to sustainable development The Board is ultimately responsible for the
strategic plan for Denison,  taking into account
its purpose, opportunities and risks.  

The President & CEO has been empowered to,
among other things: (i) provide leadership and
vision for Denison for it to grow in a sustainable
manner; (ii) develop a strategic plan for the
Board’s approval, and ensuring implementation
of that plan; and (iii) oversee the development
and implementation of, and compliance with,
key corporate policies and practices, regarding
corporate governance, ESG, climate and
sustainability, risk identification and
management and financial reporting, as well as
compliance with applicable legal and regulatory
requirements.
Describe the role of the highest governance body in overseeing the organization’s due diligence and other processes to identify and manage the organization’s impacts on the economy, environment, and people The Board oversees Denison’s approach to risk
management which is designed to support the
achievement of organizational objectives, to
improve long‐term performance and enhance
value.

Denison’s Board is responsible for overseeing
the Company’s risk identification, management
and mitigation strategies and the risk
assessment process.
The Board has delegated greater oversight
responsibilities to appropriate Board
committees, as reflected in updated Board and
committee mandates.  Each of the committees
oversees material risks within their functional
area and reports to the Board on these matters
and associated mitigation strategies on a
periodic, and at least annual, basis.
Risk Management & Oversight
Describe whether and how the highest governance body engages with stakeholders to support these processes Yes
Denison endeavours to maintain open lines of
communication with stakeholders, to enable it
to understand stakeholder concerns and
incorporate that into its strategy and
operations.  See "Material Topics" section for
more details.
Ethics
Describe the management system and due diligence procedures for assessing and managing corruption and bribery risks internally and associated with business partners in its value chain Denison's operations are located in
Canada.  Companies in Canada are subject to a
variety of local and international anti-bribery
and anti-corruption laws, including but not
limited to the Canadian Corruption of Foreign
Public Officials Act and the Foreign Corrupt
Practices Act of 1977, as amended, in the
United States.

Denison is committed to interacting with
government officials, business partners, third
parties and interested parties with integrity
and in compliance with all applicable anti-
bribery and anti-corruption laws.

All company directors, officers and employees,
are required to annually affirm their
understanding of, and compliance with,
Denison’s Anti-Bribery Policy.

For more information, please refer to Denison’s
Anti-Bribery Policy.
Anti-Bribery Policy
Report net production from activities located in the countries with the 20 lowest rankings in Transparency International’s Corruption Perception Index (CPI) (Saleable tonne) 0
Anti-Corruption
Communication and Training
i) Total number of governance body members that have received training on anti-corruption, broken down by region 4
ii.) Total percentage of governance body members that have received training on anti-corruption, broken down by region 50.0000%
General Disclosure
Remuneration
Describe how the remuneration policies for members of the highest governance body and senior executives relate to their objectives and performance in relation to the management of the organization’s impacts on the economy, environment, and people The Compensation Committee is responsible
for the Company’s executive compensation
policy and determines the general
compensation structure, policies and programs
of the Company for recommendation to the
Board.

When determining an executive’s
compensation package, the Compensation
Committee seeks to balance: (a) annual
performance incentives, which are awarded
based on success against pre-established short-
term corporate and individual goals (including
health & safety performance), with (b) long-
term incentive payments focused on longer
term performance of the Company.

For further details of Denison's executive
compensation for 2022, see Denison's
management information circular dated April 3,
2023.
Management Information Circular April 2023
How the views of stakeholders (including shareholders) regarding remuneration are sought and taken into consideration The Board has adopted an annual practice of
soliciting a non-binding shareholder advisory
vote on Denison’s approach to executive
compensation at its annual general meeting of
shareholders.  This is a formal opportunity for
shareholders to provide their views on
Denison's approach to executive
compensation.

The Compensation Committee, and the Board,
will take the results of the vote into account, as
appropriate, when considering future
compensation policies, procedures and
decisions.

Other stakeholder views are handled on a case-
by-case basis as questions are raised.
Report the results of votes of stakeholders (including shareholders) on remuneration policies and proposals, if applicable In 2022, the advisory vote on Denison's
approach to executive compensation was
approved by 97.79% of the votes received at
the meeting.
Tax
Describe the approach to stakeholder engagement and management of stakeholder concerns related to tax, including:
i. The approach to engagement with tax authorities Denison endeavours to comply with all tax laws
applicable to its operations and works
professionally and collaboratively with tax
authorities in Canada to respond to any
inquiries or audit requests.  

Denison does not have a formal tax policy or
regular engagement with tax authorities.
ii. The approach to public policy advocacy on tax Denison does not directly engage in public
policy advocacy on taxes. As members of
mining industry groups, Denison may support
industry positions on tax policies.
iii. The processes for collecting and considering the views and concerns of stakeholders, including external stakeholders Denison's commitment to high standards of
ethical behaviour and business integrity, and
responsiveness to stakeholders, includes
transparency into its corporate taxation.

Denison makes annual public filings of (1) its
consolidated tax position through the financial
statement process, in accordance with
International Financial Reporting Standards
('IFRS'), and (2) payments to governments, as
required by the Canada’s Extractive Sector
Transparency Measures Act ('ESTMA').
This document was prepared using
, Planet Earth's complete ESG reporting solution.