Coal Resource Recoverability
A MethodologyU.S. Bureau of Mines Circular 9368
Table 13.-Equipment- contour strip (two loader spreads)
| Capital equipment selection | ||||||||
| Countour stripping - two single loader spreads (two loaders total) | ||||||||
| Annual | Total | |||||||
| No. | Total hrs | Depr. term | Hourly | str line | equipment | Development | ||
| Production equipment | Unit cost | deprec. | Deprec. | Costs | amortization | |||
| 50 ton trucks | 6 | 96 | $483,800 | 26,000 | $18.60 | $429,544 | $2,901,600 | - |
| 13.5cy loaders | 2 | 32 | $899,700 | 18,000 | $49.98 | $383,872 | $1,799,400 | - |
| 350 hp dozers | 2 | 32 | $368,900 | 15,000 | $24.59 | $188,877 | $737,800 | - |
| 6" rotary drills | 2 | 16 | $432,900 | 28,000 | $15.46 | $59,369 | $865,800 | - |
| 275 hp grader | 1 | 16 | $328,300 | 28,000 | $11.73 | $45,024 | $328,300 | - |
| Spare 50 ton truck | 1 | 8 | $483,600 | 26,000 | $18.60 | $35,712 | $483,600 | - |
| Auxilliary equipment | ||||||||
| 8 cy loader (376hp) | 1 | 8 | $422,300 | 18,000 | $23.46 | $45,045 | $422,300 | - |
| 7 cy loader (270hp) | 1 | 8 | $287,100 | 18,000 | $15.95 | $30,624 | $287,100 | - |
| 270 hp dozer | 1 | 16 | $342,500 | 15,000 | $22.83 | $87,680 | $342,500 | - |
| 70 hp backhoe | 1 | 8 | $93,000 | 28,000 | $3.32 | $6,377 | $93,000 | - |
| 4000 gal water truck | 1 | 16 | $65,000 | 20,000 | $3.25 | $12,480 | $65,000 | - |
| Coal broom | 1 | 8 | $20,000 | 20,000 | $1.00 | $1,920 | $20,000 | - |
| Fuel/lube truck | 2 | 32 | $80,000 | 20,000 | $4.00 | $30,720 | $160,000 | - |
| Spare broom | 1 | 0 | $20,000 | 20,000 | $1.00 | $0 | $20,000 | - |
| Leased coal trucks | 0 | 0 | $0 | 26,000 | $0.00 | $0 | $0 | - |
| Surface support facilities | ||||||||
| Power centers | 2 | 48 | $89,300 | 87,600 | $1.02 | - | $178,600 | $11,744 |
| Feeder breakers | 2 | 48 | $149,000 | 87,600 | $1.70 | - | $298,000 | $19,595 |
| Shop/warehouse facilities | 1 | 24 | $40,000 | 87,600 | $0.46 | - | $40,000 | $2,630 |
| Office/change facilities | 1 | 24 | $36,000 | 87,600 | $0.41 | - | $36,000 | $2,367 |
| Access/haul roads | 1 | 24 | $250,000 | 87,600 | $2.85 | - | $250,000 | $16,438 |
| Surface power/trans lines | 1 | 24 | $96,600 | 87,600 | $1.10 | - | $96,600 | $6,352 |
| Stacker eonveyors | 1 | 24 | $90,000 | 87,600 | $1.03 | - | $90,000 | $5,918 |
| Site-surface development | 1 | 24 | $18,000 | 87,600 | $0.21 | - | $18,000 | $1,184 |
| Water/sewage treatment | 1 | 24 | $6,000 | 87,600 | $0.07 | - | $6,000 | $395 |
| Development capital costs | $1,013,200 | |||||||
| Annual depreciation costs | $1,356,244 | |||||||
| Total capital equipment costs | $9,539,600 | |||||||
| Mine development amortization | $66,621 | |||||||
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