Coal Resource Recoverability
A MethodologyU.S. Bureau of Mines Circular 9368
Table 15.-Equipment-longwall
| Captial equipment selection Longwall mining (42-72 in mining height) |
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| ANNUAL | TOTAL | ANNUAL | ||||||
| Longwall equipment | NO. | TOTAL HRS | DEP TERM | HOURLY | STR LINE | EQUIPMENT | DEVELOPMENT | |
| UNIT COST | DEPREC | DEPREC | COSTS | AMORTIZATION | ||||
| Longwall shearer | 1 | 16 | $1,875,000 | 20,000 | $93.75 | $360,000 | $1,876,000 | - |
| Shields | 1 | 16 | $7,360,000 | 30,000 | $245.00 | $940,800 | $7,350,000 | - |
| Face cnvr+stge loader | 1 | 16 | $1,603,500 | 20,000 | $76.18 | $288,872 | $1,603,500 | - |
| Scoop/retriever | 1 | 16 | $110,000 | 20,000 | $6.50 | $21,120 | $110,000 | - |
| Personnel carrier | 2 | 5 | $52,000 | 40,000 | $1.30 | $1,560 | $104,000 | - |
| 48" belt system | 1 | 24 | $976,100 | 87,600 | $11.13 | - | $976,100 | $64,116 |
| Vent support | 1 | 24 | $96,000 | 87,600 | $1.10 | - | $96,000 | $6,312 |
| Powr cntr + hydrl sys | 1 | 24 | $500,000 | 40,000 | $12.50 | - | $500,000 | $72,000 |
| Capital and annual depreciation/ammortization costs | $1,612,162 | $12,513,600 | $142,428 | |||||
| Development equipment | ||||||||
| Continuous miners | 3 | 34 | $780,000 | 20,000 | $39.00 | $318,240 | $2,340,000 | - |
| Shuttle cars | 4 | 64 | $165,000 | 20,000 | $8.25 | $126,720 | $660,000 | - |
| Roof bolters | 2 | 32 | $204,000 | 20,000 | $10.20 | $78,336 | $408,000 | - |
| Scoops | 2 | 32 | $110,000 | 20,000 | $5.50 | $42,240 | $220,000 | - |
| Utility Scoop | 1 | 24 | $110,000 | 20,000 | $5.50 | $31,680 | $110,000 | - |
| Pamonnal carriers | 3 | 7 | $62,000 | 40,000 | $1.30 | $2,184 | $156,000 | - |
| Rock duster | 1 | 4 | $38,500 | 40,000 | $0.96 | $924 | $38,500 | - |
| Spare shuttle cars | 2 | 4 | $161,000 | 20,000 | $8.05 | $7,728 | $322,000 | - |
| Feederlbreakers | 2 | 48 | $109,800 | 20,000 | $5.49 | - | $219,600 | $63,245 |
| Ventilation system | 1 | 24 | $96,000 | 87,600 | $1.10 | - | $96,000 | $6,312 |
| 48/60" belt system | 2 | 48 | $2,451,400 | 87,600 | $27.98 | - | $4,902,800 | $322,376 |
| Power centers | 2 | 48 | $43,200 | 87,600 | $0.49 | - | $86,400 | $5,681 |
| Capital and annual depreciation/ammortization costs | $608,052 | $9,559,300 | $397,614 | |||||
| Surface support and facilities | ||||||||
| Shop/warehouse facilities | 1 | 24 | $80,000 | 87,600 | $0.91 | - | $80,000 | $5,280 |
| Change facilities | 1 | 24 | $54,000 | 87,600 | $0.62 | - | $54,000 | $3,551 |
| Mine offices | 1 | 24 | $60,000 | 87,600 | $0.68 | - | $60,000 | $3,945 |
| Access/haulage roads | 1 | 24 | $250,000 | 87,600 | $2.85 | - | $250,000 | $16,438 |
| Site/surf development | 1 | 24 | $50,000 | 87,600 | $0.57 | - | $60,000 | $3,288 |
| Ug compressors & lines | 2 | 48 | $50,000 | 40,000 | $1.25 | - | $100,000 | $14,400 |
| Water/sewage treat. facilities | 1 | 24 | $60,000 | 87,600 | $0.68 | - | $60,000 | $3,945 |
| Surf. power sub/trans. lines | 2 | 48 | $96,600 | 87,600 | $1.10 | - | $193,200 | $12,704 |
| Mine dowater system | 1 | 24 | $90,000 | 87,600 | $1.03 | - | $90,000 | $5,918 |
| Capital and annual depreciation/amortization costs |
$0 | $937,200 | $69,449 | |||||
| Surface equipment/coal loading | ||||||||
| Surface-8 cy loader | 1 | 16 | $449,000 | 40,000 | $11.23 | $43,104 | $449,000 | |
| Grader | 1 | 8 | $134,000 | 28,000 | $4.79 | $9,189 | $134,000 | |
| 180 ft stacker conveyors | 1 | 24 | $389,300 | 87,600 | $4.44 | $389,300 | $25,598 | |
| Capital and annual depreciation/amortization costs | $52,293 | $972,300 | $25,598 | |||||
| Total capital equipment costs | $2,772,497 | $23,982,400 | $635,089 | |||||
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