During the year ended December 31, 2017 depreciation of $10,722 (2016 - $21,711 ; 2015 - $34,633) has been included in exploration expenditures.

		Computer		Field			Office			Vehicles			Building		Land		Total
Cost
As at December 31, 2014	$	91,713	$	146,041		$	6,635		$	197,200		$	572,443	$	414,526	$	1,428,558
Additions		7,981		10,224			1,170			16,105			6,065		-		41,545
Disposals and derecognition		-		(2,152	)		(3,059	)		(165,888	)		-		-		(171,099	)
As at December 31, 2015		99,694		154,113			4,746			47,417			578,508		414,526		1,299,004
Additions		10,549		6,450			-			-			-		-		16,999
Disposals and derecognition		-		(79,630	)		(2,365	)		(47,417	)		-		-		(129,412	)
As at December 31, 2016		110,243		80,933			2,381			-			578,508		414,526		1,186,591
Additions		-		-			-			-			20,447		4,337		24,784
Disposals and derecognition		-		(20,756	)		-			-			-		-		(20,756	)
As at December 31, 2017	$	110,243	$	60,177		$	2,381		$	-		$	598,955	$	418,863	$	1,190,619

Accumulated depreciation
As at December 31, 2014	$	91,713	$	106,850		$	3,958		$	157,625		$	317,183	$	-	$	677,329
Additions		7,981		8,161			1,832			15,595			117,213		-		150,782
Disposals and derecognition		-		(1,680	)		(1,656	)		(140,231	)		-		-		(143,567	)
As at December 31, 2015		99,694		113,331			4,134			32,989			434,396		-		684,544
Additions		7,438		12,601			-			671			115,490		-		136,200
Disposals and derecognition		-		(70,444	)		(1,753	)		(33,660	)		-		-		(105,857	)
As at December 31, 2016		107,132		55,488			2,381			-			549,886		-		714,887
Additions		3,111		7,104			-			-			29,129		-		39,344
Disposals and derecognition		-		(13,890	)		-			-			-		-		(13,890	)
As at December 31, 2017	$	110,243	$	48,702		$	2,381		$	-		$	579,015	$	-	$	740,341

Net book value
As at December 31, 2016	$	3,111	$	25,445		$	-		$	-		$	28,622	$	414,526	$	471,704
As at December 31, 2017	$	-	$	11,475		$	-		$	-		$	19,940	$	418,863	$	450,278

During the year ended December 31, 2017, the Company sold fully amortized equipment to an associated entity and recorded a gain on sale of $29,766 and a corresponding receivable due from the investment in the associated entity. The sale value of the equipment was determined to be market value. Included in gain (loss) on acquisition and sale of exploration and evaluation assets was field equipment in Australia with a book value of $6,866.

During the year ended December 31, 2016, the Company sold certain foreign operations for a gain of $6,834,999. Included in this gain was property and equipment with a net book value of $23,555.

During the year ended December 31, 2015, the Company acquired and sold certain exploration and evaluation assets for a net gain of $5,393,305. Included in this gain was the acquisition of property and equipment with a net book value of $7,013. Also, during the year ended December 31, 2015 the Company sold property and equipment with a net book value of $21,041 for total proceeds of $36,933 for a net gain of $15,892, and included in exploration and evaluation expenditures is a loss on disposal of property and equipment with a net book value of $6,490.