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PROPERTY, PLANT, EQUIPMENT AND MINING DEVELOPMENT COSTS, NET (Tables)
 12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment, Net [Abstract]  
Property, Plant, Equipment and Mining Development Costs, Net
The components of net property, plant, equipment and mining development costs follow:
 
December 31,
 
2015
 
2014
Proven and probable mineral reserves
$
3,880

 
$
3,879

VBPP
649

 
644

Mining development and other
4,881

 
4,414

Buildings and infrastructure
7,022

 
4,709

Machinery and equipment
11,742

 
9,253

Mobile equipment
3,845

 
3,626

Construction in progress
3,724

 
6,653

Property, plant, equipment and mining development costs
35,743

 
33,178

Accumulated depreciation, depletion and amortization
(11,497
)
 
(10,251
)
Property, plant, equipment and mining development costs, net
$
24,246

 
$
22,927