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INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2017

Inventories [Abstract]

Inventories and inventory impairment charges



	Gold						Copper
	As at December 31, 2017			As at December 31, 2016			As at December 31, 2017			As at December 31, 2016
Raw materials
Ore in stockpiles		$2,125			$2,067			$102			$72
Ore on leach pads	405			406			—			—
Mine operating supplies	515			585			79			62
Work in process	174			219			—			—
Finished products	168			50			3			5
		$3,387			$3,327			$184			$139
Non-current ore in stockpiles¹	(1,681		)	(1,536		)	—			—
		$1,706			$1,791			$184			$139


¹	Ore that we do not expect to process in the next 12 months is classified within other long-term assets.



Inventory Impairment Charges
For the years ended December 31	2017			2016
Barrick Nevada		$—			$57
Golden Sunlight	6			7
Porgera	4			3
Pierina	11			1
Inventory impairment charges¹		$21			$68


¹	Impairment charges in 2017 primarily relate to leach pad inventories at Pierina. Impairment charges in 2016 primarily relate to stockpiles at Cortez.



Ore in Stockpiles
	As at December 31, 2017			As at December 31, 2016
Gold
Barrick Nevada		$1,040			$1,128
Pueblo Viejo	538			475
Porgera	55			77
Kalgoorlie	138			127
Lagunas Norte	147			91
Buzwagi	109			64
North Mara	47			41
Veladero	22			38
Turquoise Ridge	26			22
Other	3			4
Copper
Lumwana	102			72
		$2,227			$2,139

Ore on Leach pads
	As at December 31, 2017			As at December 31, 2016
Gold
Veladero		$145			$172
Nevada	105			109
Lagunas Norte	143			97
Pierina	12			28
		$405			$406