INTEREST IN OTHER ENTITIES (Tables)

12 Months Ended

Dec. 31, 2020

Interest In Other Entities

Significant subsidiaries, associates and joint operations

			December			December			Fiscal
	Place		31, 2020			31, 2019			2020
	Of		Ownership			Ownership			Participating			Accounting
	Business		Interest (1)			Interest (1)			Interest (2)			Method
Subsidiaries
Denison Mines Inc.		Canada		100.00	%		100.00	%		N/A			Consolidation
Denison AB Holdings Corp.		Canada		100.00	%		100.00	%		N/A			Consolidation
Denison Waterbury Corp		Canada		100.00	%		100.00	%		N/A			Consolidation
9373721 Canada Inc.		Canada		100.00	%		100.00	%		N/A			Consolidation
Denison Mines (Bermuda) I Ltd		Bermuda		100.00	%		100.00	%		N/A			Consolidation
Joint Operations
Waterbury Lake Uranium Corp		Canada		60.00	%		60.00	%		100	%		Voting Share (3)
Waterbury Lake Uranium LP		Canada		66.90	%		66.57	%		100	%		Voting Share (3)
Key Contractual Arrangements
Wheeler River Joint Venture		Canada		90.00	%		90.00	%		90.00	%		Denison Share (3)
Midwest Joint Venture		Canada		25.17	%		25.17	%		25.17	%		Denison Share (3)
Mann Lake Joint Venture		Canada		30.00	%		30.00	%		N/A (4)			Denison Share (3)
Wolly Joint Venture		Canada		21.89	%		21.89	%		N/A (4)			Denison Share (3)
McClean Lake Joint Venture		Canada		22.50	%		22.50	%		22.50	%		Denison Share (3)

(1) Ownership Interest represents Denison’s percentage equity / voting interest in the entity or contractual arrangement;

(2) Participating interest represents Denison’s percentage funding contribution to the particular joint operation or contractual arrangement. This percentage can differ from ownership interest in instances where other parties to the arrangement have carried interests, they are earning-in to the arrangement, or they are diluting their interest in the arrangement (provided the arrangement has dilution provisions therein);

(3) Denison Share is where Denison accounts for its share of assets, liabilities, revenues and expenses in accordance with the specific terms within the contractual arrangement. – this can be by using either its ownership interest (i.e. Voting Share) or its participating interest (i.e. Funding Share), depending on the arrangement terms. The Voting Share and Funding Share approaches produce the same accounting result when the Company’s ownership interest and participating interests are equal;

(4) The participating interest for 2020 for these arrangements is shown as Not Applicable as there were no approved spending programs carried out during fiscal 2020.