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PROPERTY, PLANT, EQUIPMENT AND MINING DEVELOPMENT COSTS, NET (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment, Net [Abstract]

Property, Plant, Equipment and Mining Development Costs, Net

The components of net property, plant, equipment and mine development costs follow:

			December 31,
			2020						2019
Proven and probable mineral reserves			$	7,142					$	7,087
VBPP			376						465
Mine development and other			10,686						8,180
Buildings and infrastructure			9,214						8,435
Machinery and equipment			14,235						13,312
Mobile equipment			4,495						4,320
Construction in progress			1,454						4,265
Oil and gas properties			27,281						27,293
Total			74,883						73,357
Accumulated depreciation, depletion, and amortizationa			(45,065)						(43,773)
Property, plant, equipment and mine development costs, net			$	29,818					$	29,584

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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