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Property, Plant and Equipment, net

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, net

Property, Plant and Equipment, net

Net property, plant and equipment consisted of:

			March 31, 2022						December 31, 2021
Machinery, equipment and tooling			$	32,390					$	30,813
SmartSystems			27,544						27,343
Vehicles			3,173						3,066
Furniture and fixtures			1,329						1,325
Plant and building			200,099						199,958
Real estate properties			6,496						6,496
Railroad and sidings			33,591						27,703
Land and land improvements			40,152						35,652
Asset retirement obligation			28,818						20,536
Mineral properties			7,442						7,442
Deferred mining costs			2,455						2,455
Construction in progress			6,043						9,574
			389,532						372,363
Less: accumulated depreciation and depletion			116,220						109,898
Total property, plant and equipment, net			$	273,312					$	262,465

Depreciation expense was $6,362 and $6,177 for the three months ended March 31, 2022 and 2021, respectively.

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- References

No definition available.

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- Definition

The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 360
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-URI http://asc.fasb.org/topic&trid=2155823

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 360
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 360
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916

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