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Property, plant and equipment | 12 Months Ended
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Dec. 31, 2020
Property Plant And Equipment [Abstract] |
Property, plant and equipment | 8. Property, plant and equipment
At December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Land |  | Plant |  | Furniture |  |  |  |  | Exploration |  |  |
| and |  | and |  | and |  | Under |  | and |  |  |
| buildings |  | equipment |  | fixtures |  | construction |  | evaluation |  | Total
Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning of year | $ | 5,050,115 |  | $ | 2,678,165 |  | $ | 80,869 |  | $ | 132,457 |  | $ | 1,071,840 |  | $ | 9,013,446
Additions |  | 2,030 |  |  | 7,097 |  |  | 855 |  |  | 67,477 |  |  | 3 |  |  | 77,462
Transfers |  | 37,971 |  |  | 21,405 |  |  | 2,554 |  |  | (60,391) |  |  | - |  |  | 1,539
Change in reclamation provision [note 15] |  | 151,558 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 151,558
Disposals |  | (1,678) |  |  | (3,385) |  |  | (5,299) |  |  | (492) |  |  | (99) |  |  | (10,953)
Effect of movements in exchange rates |  | (15,663) |  |  | (3,438) |  |  | (68) |  |  | - |  |  | 53,739 |  |  | 34,570
End of year |  | 5,224,333 |  |  | 2,699,844 |  |  | 78,911 |  |  | 139,051 |  |  | 1,125,483 |  |  | 9,267,622
Accumulated depreciation and impairment
Beginning of year |  | 2,936,088 |  |  | 1,793,049 |  |  | 76,601 |  |  | 36,799 |  |  | 458,386 |  |  | 5,300,923
Depreciation charge |  | 84,261 |  |  | 89,550 |  |  | 3,010 |  |  | - |  |  | - |  |  | 176,821
Change in reclamation provision [note 15](a) |  | 23,921 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 23,921
Disposals |  | (903) |  |  | (2,997) |  |  | (5,299) |  |  | (1) |  |  | (150) |  |  | (9,350)
Effect of movements in exchange rates |  | (12,075) |  |  | (3,266) |  |  | (66) |  |  | - |  |  | 25,427 |  |  | 10,020
End of year |  | 3,031,292 |  |  | 1,876,336 |  |  | 74,246 |  |  | 36,798 |  |  | 483,663 |  |  | 5,502,335
Right-of-use assets
Beginning of year |  | 2,646 |  |  | 5,084 |  |  | 419 |  |  | - |  |  | - |  |  | 8,149
Additions |  | 75 |  |  | 22 |  |  | 2,124 |  |  | - |  |  | - |  |  | 2,221
Disposals |  | (40) |  |  | (747) |  |  | - |  |  | - |  |  | - |  |  | (787)
Depreciation charge |  | (875) |  |  | (498) |  |  | (401) |  |  | - |  |  | - |  |  | (1,774)
Transfers |  | - |  |  | (1,539) |  |  | - |  |  | - |  |  | - |  |  | (1,539)
End of year |  | 1,806 |  |  | 2,322 |  |  | 2,142 |  |  | - |  |  | - |  |  | 6,270
Net book value at December 31, 2020 | $ | 2,194,847 |  | $ | 825,830 |  | $ | 6,807 |  | $ | 102,253 |  | $ | 641,820 |  | $ | 3,771,557
At December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Land |  | Plant |  | Furniture |  |  |  |  | Exploration |  |  |
| and |  | and |  | and |  | Under |  | and |  |  |
| buildings |  | equipment |  | fixtures |  | construction |  | evaluation |  | Total
Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning of year | $ | 5,039,313 |  | $ | 2,654,944 |  | $ | 80,083 |  | $ | 114,060 |  | $ | 1,121,061 |  | $ | 9,009,461
Additions |  | 2,327 |  |  | 7,179 |  |  | 158 |  |  | 65,482 |  |  | 65 |  |  | 75,211
Transfers |  | 17,157 |  |  | 28,453 |  |  | 951 |  |  | (46,561) |  |  | - |  |  | -
Change in reclamation provision |  | 24,883 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 24,883
Disposals |  | (923) |  |  | (3,486) |  |  | (142) |  |  | (507) |  |  | (693) |  |  | (5,751)
Effect of movements in exchange rates |  | (32,642) |  |  | (8,925) |  |  | (181) |  |  | (17) |  |  | (48,593) |  |  | (90,358)
End of year |  | 5,050,115 |  |  | 2,678,165 |  |  | 80,869 |  |  | 132,457 |  |  | 1,071,840 |  |  | 9,013,446
Accumulated depreciation and impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning of year |  | 2,835,037 |  |  | 1,697,178 |  |  | 74,860 |  |  | 36,799 |  |  | 483,661 |  |  | 5,127,535
Depreciation charge |  | 128,579 |  |  | 105,700 |  |  | 2,057 |  |  | - |  |  | - |  |  | 236,336
Change in reclamation provision(a) |  | 2,732 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 2,732
Disposals |  | (225) |  |  | (2,194) |  |  | (139) |  |  | - |  |  | (639) |  |  | (3,197)
Effect of movements in exchange rates |  | (30,035) |  |  | (7,635) |  |  | (177) |  |  | - |  |  | (24,636) |  |  | (62,483)
End of year |  | 2,936,088 |  |  | 1,793,049 |  |  | 76,601 |  |  | 36,799 |  |  | 458,386 |  |  | 5,300,923
Right-of-use assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning of year |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | -
Additions |  | 3,517 |  |  | 5,768 |  |  | 851 |  |  | - |  |  | - |  |  | 10,136
Disposals |  | - |  |  | (9) |  |  | - |  |  | - |  |  | - |  |  | (9)
Depreciation charge |  | (871) |  |  | (675) |  |  | (432) |  |  | - |  |  | - |  |  | (1,978)
End of year |  | 2,646 |  |  | 5,084 |  |  | 419 |  |  | - |  |  | - |  |  | 8,149
Net book value at December 31, 2019 | $ | 2,116,673 |  | $ | 890,200 |  | $ | 4,687 |  | $ | 95,658 |  | $ | 613,454 |  | $ | 3,720,672
Cameco has contractual capital commitments of approximately $47,000,000 at December 31, 2020. Certain of the contractual commitments may contain cancellation clauses, however the Company discloses the commitments based on management’s intent to fulfill the contract. The majority of this amount i s expected to be incurred in 2021. (a) Asset retirement obligation assets are adjusted when the Company updates its reclamatio n provisions due to new cash flow estimates or changes in discount and inflation rates. When the assets of an operation have been written off due to an impairment, as is the case with our Rabbit Lake operation and some of our operations in the United States, the adjustment is recorded directly to the statement of earnings as other operating expense or income.

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