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INVENTORIES (Tables)

12 Months Ended

Dec. 31, 2018

Inventories [Abstract]

Inventories and inventory impairment charges



	Gold						Copper
	As at December 31, 2018			As at December 31, 2017			As at December 31, 2018			As at December 31, 2017
Raw materials
Ore in stockpiles		$2,106			$2,125			$151			$102
Ore on leach pads	405			405			—			—
Mine operating supplies	496			515			66			79
Work in process	146			174			—			—
Finished products	176			168			2			3
		$3,329			$3,387			$219			$184
Non-current ore in stockpiles¹	(1,696		)	(1,681		)	—			—
		$1,633			$1,706			$219			$184


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	2018			2017
Lagunas Norte		$166			$—
Lumwana	18			—
Golden Sunlight	10			6
Pierina	4			11
Porgera	1			4
Inventory impairment charges¹		$199			$21


¹	Impairment charges in 2018 primarily relate to stockpiles at Lagunas Norte (refer to note 21). Impairment charges in 2017 primarily relate to leach pad inventories at Pierina.



Ore in Stockpiles
	As at December 31, 2018			As at December 31, 2017
Gold
Barrick Nevada		$1,083			$1,040
Pueblo Viejo	603			538
Kalgoorlie	125			138
Buzwagi	83			109
North Mara	70			47
Lagunas Norte	49			147
Veladero	39			22
Porgera	37			55
Turquoise Ridge	13			26
Other	4			3
Copper
Lumwana	151			102
		$2,257			$2,227

Ore on Leach pads
	As at December 31, 2018			As at December 31, 2017
Gold
Lagunas Norte		$168			$143
Veladero	138			145
Nevada	81			105
Pierina	18			12
		$405			$405