The following is a summary of the capitalized costs on the projects described above.


	Rook I $		Other Athabasca Basin Properties $			IsoEnergy Properties $		Total $
Acquisition costs:
Balance, December 31, 2017		235,077		1,457,607			24,737,248		26,429,932
Additions		—		—			1,885,297		1,885,297

Balance, December 31, 2018		235,077		1,457,607			26,622,545		28,315,229

Deferred exploration costs:
Balance, December 31, 2017		112,937,959		4,942,297			8,102,367		125,982,623
Additions:		—		—
Drilling		16,761,145		—			1,103,960		17,865,105
General exploration		2,885,003		(23,200	)		142,069		3,003,872
Geological and geophysical		7,650,358		1,611,436			256,224		9,518,018
Labour and wages		5,008,846		—			693,611		5,702,457
Share-based payments (Note 9)		2,883,711		—			235,852		3,119,563
Travel		531,903		—			89,824		621,727

		35,720,966		1,588,236			2,521,540		39,830,742

Balance, December 31, 2018		148,658,925		6,530,533			10,623,907		165,813,365

Total costs, December 31, 2018		148,894,002		7,988,140			37,246,452		194,128,594


	Rook I $		Other Athabasca Basin Properties $			IsoEnergy Properties $		Total $
*Acquisition costs:*
Balance, December 31, 2016		230,807		1,124,277			21,438,306		22,793,390
Additions		4,270		333,330			3,298,942		3,636,542

Balance, December 31, 2017		235,077		1,457,607			24,737,248		26,429,932

*Deferred exploration costs:*
Balance, December 31, 2016		77,007,303		4,318,909			5,327,318		86,653,530
Additions:
Drilling		20,592,799		3,297			1,168,096		21,764,192
General exploration		2,163,554		25,885			110,603		2,300,042
Geological and geophysical		5,206,266		681,955			521,632		6,409,853
Labour and wages		4,391,456		—			510,398		4,901,854
Share-based payments (Note 9)		2,952,316		—			357,475		3,309,791
Travel		624,265		—			106,845		731,110

		35,930,656		711,137			2,775,049		39,416,842

Impairment		—		(87,749	)		—		(87,749	)

Balance, December 31, 2017		112,937,959		4,942,297			8,102,367		125,982,623

Total costs, December 31, 2017		113,173,036		6,399,904			32,839,615		152,412,555