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6. Properties, Plants and Equipment | 12 Months Ended
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Dec. 31, 2018
Properties Plants And Equipment |
Properties, Plants and Equipment | The major components of the Company's properties, plants and equipment by segment at December 31, 2018 and 2017 are shown below:
|  | Antimony Segment |  |  | Zeolite Segment |  |  | Precious Metals |  |  |  |
2018 |  | USAC |  |  | USAMSA |  |  | BRZ |  |  | Segment |  |  | TOTAL |
Plant & Equipment |  | $ | 743,767 |  |  | $ | 8,466,461 |  |  | $ | 3,690,249 |  |  | $ | 792,628 |  |  | $ | 13,693,105 |
Buildings |  |  | 247,210 |  |  |  | 900,992 |  |  |  | 391,305 |  |  |  | - |  |  |  | 1,539,507 |
Mineral Rights and Interests |  |  | - |  |  |  | 3,793,502 |  |  |  | 3,664 |  |  |  | - |  |  |  | 3,797,166 |
Land & Other |  |  | 3,274,572 |  |  |  | 2,529,294 |  |  |  | 15,310 |  |  |  | - |  |  |  | 5,819,176 |
|  |  | 4,265,549 |  |  |  | 15,690,249 |  |  |  | 4,100,528 |  |  |  | 792,628 |  |  |  | 24,848,954 |
Accumulated Depreciation |  |  | (2,630,234 | ) |  |  | (4,029,480 | ) |  |  | (2,785,159 | ) |  |  | (176,909 | ) |  |  | (9,621,782 | )
|  | $ | 1,635,315 |  |  | $ | 11,660,769 |  |  | $ | 1,315,369 |  |  | $ | 615,719 |  |  | $ | 15,227,172 |
|  | Antimony Segment |  |  | Zeolite Segment |  |  | Precious Metals |  |  |  |
2017 |  | USAC |  |  | USAMSA |  |  | BRZ |  |  | Segment |  |  | TOTAL |
Plant & Equipment |  | $ | 743,767 |  |  | $ | 7,655,777 |  |  | $ | 3,577,055 |  |  | $ | 751,640 |  |  | $ | 12,728,239 |
Buildings |  |  | 247,210 |  |  |  | 900,992 |  |  |  | 349,946 |  |  |  | - |  |  |  | 1,498,148 |
Mineral Rights and Interests |  |  |  |  |  |  | 3,793,502 |  |  |  | 3,664 |  |  |  | - |  |  |  | 3,797,166 |
Land & Other |  |  | 3,274,572 |  |  |  | 2,529,294 |  |  |  | 15,310 |  |  |  | - |  |  |  | 5,819,176 |
|  |  | 4,265,549 |  |  |  | 14,879,565 |  |  |  | 3,945,975 |  |  |  | 751,640 |  |  |  | 23,842,729 |
Accumulated Depreciation |  |  | (2,577,552 | ) |  |  | (3,427,058 | ) |  |  | (2,596,356 | ) |  |  | (108,866 | ) |  |  | (8,709,832 | )
|  | $ | 1,687,997 |  |  | $ | 11,452,507 |  |  | $ | 1,349,619 |  |  | $ | 642,774 |  |  | $ | 15,132,897 |
At December 31, 2018 and 2017, the Company had $1,270,289 and $521,896, respectively, of assets that were not yet placed in service and have not yet been depreciated.

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- References No definition available. + Details
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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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