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Property, Plant and Equipment (Tables)
6 Months Ended
Jun. 30, 2020
Property, Plant and Equipment.  
Schedule of property plant and equipment

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June 30, 

    

December 31, 

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2020

    

2019

Systems and related equipment

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297,297

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$

294,547

Systems in process

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11,386

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11,867

Transloading facility and equipment

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—

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40,272

Computer hardware and software

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980

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1,335

Machinery and equipment

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5,242

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5,214

Vehicles

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3,736

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7,633

Buildings

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4,342

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4,339

Land

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612

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612

Furniture and fixtures

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​

238

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284

Property, plant and equipment, gross

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323,833

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366,103

Less: accumulated depreciation

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(68,294)

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(59,520)

Property, plant and equipment, net

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$

255,539

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$

306,583