Coal Resource Recoverability
A MethodologyU.S. Bureau of Mines Circular 9368
Table 17.-Standard costing model (example)
| CONTINUOUS MINER/ROOM & PILLAR
(WITH RETREAT CAVING) - MINE COSTS (24-42" MINING HEIGHT) |
|
| ASSUMPTIONS: 394 -RAW TONS PRODUCED/UNIT-SHIFT 240 -DAYS WORKED/YEAR - PRODUCTION EMPLOYEES 240 -DAYS WORKED/YEAR - AUXILIARY EMPLOYEES 2 -NUMBER OF CONTINUOUS MINER UNITS 2 -SHIFTS/DAY PRODUCTION 5 -DAYS/WEEK PRODUCTION EMPLOYEES 5 -DAYS/WEEK AUXILIARY EMPLOYEES 3 -SHIFTS/DAY - PRODUCTION PLUS MAINTENANCE 35% -BURDEN RATE - HOURLY AND SALARY 110% -BLACK LUNG TAX (SAME AS $1.10/TON) $548 -OP. SUPPLIES/UNIT/SHIFT $0 -EQUIPMENT RENT/UNIT/YEAR $15,508 -GENERAL UTILITIES/MONTH |
ALSO: - THE CM MINE IS SET UP WITH TWO COMPLETE PRODUCTION UNITS. EQUIPMENT IS SCHEDULED FOR TWO SHIFTS/DAY, FIVE DAYS/WEEK, WITH GENERAL AND PREVENTATIVE MAINTENANCE AND BELT MOVES SCHEDULED FOR THE THIRD SHIFT EACH DAY, FIVE DAYS/WEEK. - REPAIR, SUPPLY, AND SUPPORT EQUIPMENT WILL BE SHARED BETWEEN PRODUCTION UNITS. - ALL SURFACE SITE MAINTENANCE (SUCH AS, SNOW REMOVAL AND ROAD MAINTENANCE) WILL BE DONE BY THE SURFACE MINING OPERATIONS. - PRODUCTIVITY IS ASSUMED TO BE A FUNCTION OF MINING HEIGHT AND MINING HEIGHTS ARE ASSUMED TO BE SEAM THICKNESS - UNDERGROUND MINING CONFIGURATIONS LESS THAN 42" B15 4", OF OUT-OF-SEAM DILUTION. CONFIGURATIONS GREATER THAN 42" CONTRIBUTE 2", OF DILUTION (UNDER IDEAL CONDITIONS). |
| $700 -AUTO EXPENSES/SALARIED EMPLOYEE (PER
MONTH) $0.30 -PROPERTY INSURANCE/$l00 OF CAPITAL VALUATION $0.05 -$/TON PROFESSIONAL SERVICES (PERMITTING, ENGINEERING, ETC) $362 -GENERAL EXPENSES/UNIT-SHIFT (CONTRACT SERVICES. MISC. EXPENSES) $2.50 -$/TON ROYALTY RATE $0.15 -$/TON RECLAMATION TAX (SMCRA) $0.60 -$/TON DEPLETION $90,000 -OVERHEAD ALLOCATED/YEAR $0.06 -RECLAMATION PROVISION (COST/CLEAN TON) $1.00 -S/TON RAIL LOADOUT COSTS $2.85 -PREPARATION PLANT COST/RAW TON OF COAL $0.65 -TRUCK HAULAGE COST ($/RAW TON) 80%-% COAL RECOVERED FROM WASH PLANT 0%-% RAW MINED COAL DIRECTLY SALEABLE (WITHOUT WASHING) 13%-% FACTOR FOR HOURLY PAYROLL (FOR O.T.& PERS. DAYS 9 <= FIVE DAYS/WEEK WORK SCHED.) 18%-% FACTOR FOR HOURLY PAYROLL (FOR O.T.& PERS. DAYS 9 SIX DAYS/WEEK WORK SCHED.) 18%-% FACTOR FOR HOURLY PAYROLL (FOR O.T.& PERS. DAYS 2 SEVEN DAYS/WEEK WORK SCHED.) $27.00 -COAL SALES PRICE/CLEAN TON (BASED ON QUALITY) 128,640 -TOTAL EMPLOYEE-HOURS/YEAR 18.82 -CLEAN TONS/EMPLOYEE-SHIFT 23.52 -RAW TONS/EMPLOYEE-SHIFT |
|
| $29.24 -COST IN CAR | |
TWO CONT. MINER UNITS (24-42" MINING HEIGHT) |
||
| RAW TONS PER YEAR CLEAN TONS |
378,240 302,592 |
|
| DIRECT COSTS | COST/TON | |
| PAYROLL | $2,484,775 | $8.21 |
| BURDEN | $869,671 | $2.87 |
| FUEL & LUBES | $88,932 | $0.29 |
| EXPLOSIVES | $0 | $0.00 |
| OTHER PRODUCTION SUPPLIES | $526,132 | $1.74 |
| REPAIR PARTS/MAINT.SUPL. | $417,720 | $1.38 |
| UTILITIES | $186,094 | $0.62 |
| EQUIPMENT RENTAL | $0 | $0.00 |
| AUTO EXPENSE | $58,800 | $0.19 |
| PROFESSIONAL SERVICE | $15,130 | $0.05 |
| RECLAMATION PROVISION | $18,156 | $0.06 |
| TRUCKING | $245,856 | $0.81 |
| GENERAL EXPENSES | $347,603 | $1.15 |
| TIPPLE COST | $1,077,984 | $3.56 |
| DEPRECIATION | $446,769 | $1.48 |
| TOTAL DIRECT COSTS | $6,783,621 | $22.42 |
| INDIRECT COSTS | ||
| DEPLETION | $181,555 | $0.60 |
| MINE DEV. AMORTIZATION | $185,243 | $0.61 |
| OVERHEAD | $90,000 | $0.30 |
| INSURANCE | $14,865 | $0.05 |
| TOTAL INDIRECT COSTS | $471,663 | $1.56 |
| TAXES | $836,458 | $2.76 |
| ROYALTIES | $756,480 | $2.50 |
| COST IN CAR | $8,848,222 | $29.24 |
| EQUIPMENT OPERATING COST CALCULATIONS | ||||||||||
| PRODUCTION | # UNITS | # UNITS | # UNITS | HRS WORKED | TOTAL R&M | TOTAL F&L | TOTAL DEPR | R&M | F&L | DEPR |
| EQUIPMENT | 1ST SHIFT | 2ND SHIFT | 3RD SHIFT | PER SHIFT | PER DAY | PER DAY | PER DAY | PER HOUR | PER HOUR | PER HOUR |
| CONTINUOUS MINERS | 2 | 2 | 0 | 8 | $848.00 | $123.20 | $960.00 | $26.50 | $3.85 | $30.00 |
| SHUTTLE CARS | 4 | 4 | 0 | 8 | $416.00 | $112.00 | $420.16 | $6.50 | $l.75 | $6.57 |
| ROOF BOLTERS | 2 | 2 | 0 | 8 | $176.00 | $48.00 | $247.68 | $5.50 | $1.50 | $7.74 |
| SCOOPS | 2 | 2 | 0 | 8 | $136.00 | $32.00 | $98.88 | $4.25 | $1.00 | $3.09 |
| SURF-4cy LOADER | 1 | 0 | 0 | 4 | $20.00 | $17.44 | $20.60 | $5.00 | $4.36 | $5.15 |
| GRADER | 1 | 0 | 0 | 1 | $4.00 | $3.16 | $4.79 | $4.00 | $3.16 | $4.79 |
| DAILY TOTAL | 12 | 10 | 0 | $1,600.00 | $335.80 | $1,752.11 | ||||
| ANNUAL TOTAL | $384,000 | $80,592 | $420,505 | |||||||
| AUXILIARY | # UNITS | # UNITS | # UNITS | HRS WORKED | TOTAL R&M | TOTAL F&L | TOTAL DEPR | R&M | F&L | DEPR |
| EQUIPMENT | 1ST SHIFT | 2ND SHIFT | 3RD SHIFT | PER SHIFT | PER DAY | PER DAY | PER DAY | PER HOUR | PER HOUR | PER HOUR |
| UTILITY SCOOP | 1 | 1 | 1 | 8 | $96.00 | $24.00 | $74.16 | $4.00 | $1.00 | $3.09 |
| PERSONNEL CARRIERS | 3 | 3 | 1 | 1 | $17.50 | $3.50 | $8.05 | $2.50 | $2.50 | $1.15 |
| ROCK DUSTER | 1 | 0 | 0 | 1 | $1.00 | $0.25 | $0.96 | $1.00 | $1.00 | $0.96 |
| SPARE SHUTTLE CARS | 2 | 2 | 0 | 1 | $26.00 | $7.00 | $26.26 | $6.50 | $1.75 | $6.57 |
| DAILY TOTAL | 7 | 6 | 2 | $140.50 | $34.75 | $109.43 | ||||
| ANNUAL TOTAL | $33,720 | $8,340 | $26,264 | |||||||
| ANNUAL GRAND TOTAL | $417,720 | $88,932 | $446,769 | |||||||
PAYROLL |
# OF EMPS | # OF EMPS | # OF EMPS | PAYROLL | BASE | RATE/HR | RATE/HR | RATE/HR | ||
| 1ST SHIFT | 2ND SHIFT | 3RD SHIFT | HRS/SHIFT | RATE/DAY | GRADE | RATE | 1st SHIFT | 2nd SHIFT | 3rd SHIFT | |
| PRODUCTION EMPLOYEES | +0.30/hr | +0.40/hr | ||||||||
| CONT. MINER OPER. | 2 | 2 | 0 | 8 | $561.40 | 5 | $16.62 | $17.39 | $17.69 | $17.79 |
| CONT. MINER HELPER | 2 | 2 | 0 | 8 | $547.84 | 4 | $16.21 | $16.97 | $17.27 | $17.37 |
| SHUTTLE CAR OPER. | 4 | 4 | 0 | 8 | $1,071.08 | 3 | $15.84 | $16.59 | $16.89 | $16.99 |
| ROOF BOLTER OPER. | 4 | 4 | 0 | 8 | $1,122.81 | 5 | $16.62 | $17.39 | $17.69 | $17.79 |
| SCOOP OPERATOR | 2 | 2 | 0 | 8 | $535.54 | 3 | $15.84 | $16.59 | $16.89 | $16.99 |
| TOTAL-1ST. SHIFT | 14 | $1,902.53 | ||||||||
| TOTAL-2ND. SHIFT | 14 | $1,936.13 | ||||||||
| TOTAL-3RD. SHIFT | 0 | $0.00 | ||||||||
| TOTAL PRODUCTION PAYROLL | 28 | $3,838.66 | ||||||||
| OVERTIME FACTOR | 0.13 | |||||||||
| TOTAL WITH O.T. PAY | $4,337.69 | |||||||||
| ADJ | ADJ | ADJ | ||||||||
| # OF EMPS | # OF EMPS | # OF EMPS | PAYROLL | BASE | RATE/HR | RATE/HR | RATE/HR | |||
| 1ST SHIFT | 2ND SHIFT | 3RD SHIFT | HRS/SHIFT | RATE/DAY | GRADE | RATE | 1st SHIFT | 2nd SHIFT | 3rd SHIFT | |
| AUXILIARY EMPLOYEES | +0.30/hr | +0.40/hr | ||||||||
| SCOOP OPERATOR | 1 | 1 | 0 | 8 | $267.77 | 3 | $15.84 | $16.59 | $16.89 | $16.99 |
| POCKETMEN | 2 | 2 | 0 | 8 | $535.54 | 3 | $15.84 | $16.59 | $16.89 | $16.99 |
| SUPPLYMEN | 1 | 1 | 0 | 8 | $262.83 | 1 | $15.55 | $16.28 | $16.58 | $16.68 |
| LAMPMAN/WAREHSE | 1 | 1 | 0 | 8 | $262.83 | 1 | $15.55 | $16.28 | $16.58 | $16.68 |
| BELT MAINT/CLEANUP | 2 | 2 | 2 | 8 | $792.49 | 1 | $15.55 | $16.28 | $16.58 | $16.68 |
| MECHANICS | 2 | 2 | 4 | 8 | $1,130.80 | 5 | $16.62 | $17.39 | $17.69 | $17.79 |
| ELECTRICIANS | 1 | 1 | 1 | 8 | $423.05 | 5 | $16.62 | $17.39 | $17.69 | $17.79 |
| SURF. UTILITY OPER. | 1 | 0 | 0 | 8 | $132.69 | 3 | $15.84 | $16.59 | $16.89 | $16.99 |
| TOTAL-LST. SHIFT | 11 | $1,469.05 | ||||||||
| TOTAL-2ND. SHIFT | 10 | $1,360.37 | ||||||||
| TOTAL-3RD. SHIFT | 7 | $978.58 | ||||||||
| TOTAL AUXILIARY PAYROLL | 28 | $3,808.00 | ||||||||
| OVERTIME FACTOR | 0.13 | |||||||||
| TOTAL WITH O.T. PAY | $4,303.04 | |||||||||
| TOTAL HRLY EMPLS PER SHIFT | 25 | 24 | 7 | |||||||
| TOTAL HOURLY EMPLOYESS | 56 | |||||||||
| TOTAL ANNUAL HOURLY PAYROLL | $2,073,775 |
MINE MANAGEMENT AND STAFF |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| # EMPL | # EMPL | # EMPL | BASE SALARY | TOT SALARY | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 1ST SHIFT | 2ND SHIFT | 3RD SHIFT | PER YEAR | PER YEAR | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| GENERAL MANAGER | 1 | $57,000 | $57,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| PRODUCTION FOREMEN | 2 | 2 | $42,000 | $168,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| MAINT. FOREMEN | 1 | 1 | $40,000 | $80,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| MINE ACCNT/PUR.AGENT | 1 | $40,000 | $40,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| MINE CLERK | 1 | $18,000 | $18,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| TECHS./SURVEYORS | 2 | $24,000 | $48,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| TOTAL ANNUAL SALARY | $411,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| NUMBER OF EMPLOYEES WITH CO. AUTOS | 7 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TOTAL SALARIED EMPLOYEES | 11 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TOTAL RAW TONS PROD. COAL PER YEAR | 378,240 | TAX DEFINITION: 1) Sales taxes are based on the total capital cost/8 yr. ave. life + annual taxable items. 2) Severance taxes are based on the sold tons times their realization, minus the cost of road transportation. 3) Real property taxes are based on 30% of the assessed valuation times the amortization (property+buildings+ improvments) times the tax rate. 4)Tangible property tax is based on the total capital cost times the property assessment rate times the tax rate. 5) Federal reclamation taxes are based on the sold tons times the tax rate. 6) State mineral taxes on urvnined reserves (annual planned production) is based on the sold tons times the coat value (usually the royalty rate) times the tax rate. 7) Black Lung taxes are based on sold tons times tax rate. |
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| %RAW SALABLE | 0% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| RAW TONS SALABLE | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| RAW TONS COAL TO WASHER | 378,240 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| % REC | 80% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| CLEAN TONS WASHED COAL | 302,592 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TOTAL TONS COAL SOLD | 302,592 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| COST | TONS/ | COST/ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TIPPLE COST | PER TON | YEAR | YEAR | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| RAIL LOADOUT (RAW COAL) | $1.00 | 0 | $0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| PREP PLANT(WASHED COAL) | $2.85 | 378,240 | $1,077,984 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| TOTAL TIPPLE COST | $1,077,984 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TAXES | TAX | TAXED | COST/ | COST | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| RATE | PRODUCT | YEAR | PER TON | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| SALES | 5.00% | 1,652,146 | $82,607 | $0.27 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| SEVERANCE | 4.50% | 302,952 | $356,586 | $1.18 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| REAL PROPERTY | $1.09 | 185,243 | $604 | $0.00 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| TANGIBLE PROPERTY | $1.13 | $4,954,900 | $16,855 | $0.06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| RECLAMATION (SMCRA) | $0.15 | 302,592 | $45,389 | $0.15 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| STATE MINL TAX (UNMINED) | $0.21 | 302,592 | $1,566 | $0.01 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| BLACK LUNG TAX | $1.10 | 302,592 | $332,851 | $1.10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| TOTAL TAX/YEAR | $836,458 | $2.76 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
CAPITAL EQUIPMENT SELECTION UNDERGROUND CONTINUOUS MINER - 2 PRODUCTION UNITS |
||||||||
| (24-42" Mining Height) | ||||||||
| Production Equipment | No. Units |
Total Hrs. Per Day |
Unit Cost | Depr. Term (in hrs.) |
Hourly Deprec. |
Annual Str. Line Deprec. |
Total Equipment Costs |
Annual Development Amortization |
| Continuous Miners | 2 | 32 | $600,000 | 20,000 | $30.00 | $230,400 | $1,200,000 | - |
| Shuttle Cars | 4 | 64 | $131,300 | 20,000 | $6.57 | $100,838 | $525,200 | - |
| Roof Bolters | 2 | 32 | $154,800 | 20,000 | $7.74 | $59,443 | $309,600 | - |
| Scoops | 2 | 32 | $61,800 | 20,000 | $3.09 | $23,731 | $123,600 | - |
| Surf-4cy Loader | 1 | 4 | $206,000 | 40,000 | $5.15 | $4,944 | $206,000 | - |
| Grader | 1 | 1 | $134,000 | 28,000 | $4.79 | $1,149 | $134,000 | - |
Auxiliary Equipment |
||||||||
| Utility Scoop | 1 | 24 | $61,800 | 20,000 | $3.09 | $17,798 | $61,800 | - |
| Personnel Carriers | 3 | 7 | $46,000 | 40,000 | $1.15 | $1,932 | $138,000 | - |
| Rock Duster | 1 | 1 | $38,500 | 40,000 | $0.96 | $231 | $38,500 | - |
| Spare Shuttle Cars | 2 | 4 | $131,300 | 20,000 | $6.57 | $6,302 | $262,600 | - |
| Feeder/Breakers | 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 |
| Belt System | 1 | 24 | $873,000 | 87,600 | $9.97 | - | $873,000 | $57,403 |
| Power Centers | 2 | 48 | $43,200 | 87,600 | $0.49 | - | $86,400 | $5,681 |
Surface Support and Facilities |
||||||||
| 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 |
| Site-Surface Development | 1 | 24 | $18,000 | 87,600 | $0.21 | - | $18,000 | $1,210 |
| UG Compressors & Lines | 2 | 48 | $50,000 | 40,000 | $1.25 | - | $100,000 | $14,400 |
| Water/Sewage Treat. Fac. | 1 | 24 | $60,000 | 87,600 | $0.68 | - | $60,000 | $3,945 |
| Surf . Power Sub/Trans Line | 1 | 24 | $96,600 | 87,600 | $1.10 | - | $96,600 | $6,352 |
Surface Equipment |
||||||||
| 120' Stacker Conveyors | 1 | 24 | $80,000 | 87,600 | $0.91 | - | $80,000 | $5,260 |
| Leased Coal Truck Haulage | - | - | - | - | - | - | - | - |
| Annual Depreciation/Amortization Costs | $446,769 | $185,243 | ||||||
| Total Capital Equipment Costs | $4,954,900 | |||||||
UMWA WAGES - 1988 CONTRACT, UNDERGROUND MINING |
|
EFFECTIVE DATE |
02/01/90 |
Grade 5 - Base Hourly Rate |
$16.615 |
| Grade 4 - Base Hourly Rate | $16.210 |
| Grade 3 - Base Hourly Rate | $15.843 |
| Grade 2 - Base Hourly Rate | $15.620 |
| Grade 1 - Base Hourly Rate | $15.548 |
Training Rates |
$14.974 |
|
|
| GRADE 5 | |
| A. Continuous Mining Machine Operator | E. Longwall Machine Operator |
| B. Electrician | |
| C. Mechanic | F. Welder, First Class |
| D. Fireboss | G. Roof Bolter |
| GRADE 4 | |
| A. Cutting Machine Operator | G. Continuous Miner Helper - Trainee |
| B. Dispatcher | |
| C. Loading Machine Operator | |
| D. Machine Operator Helper | H. Roof Bolter Helper - Trainee |
| E. General Inside Repairman and Welder |
I. Maintenance Trainee (Max. 12 Mos.) |
| J. Electrician Trainee (Max 12 Mos.) |
|
| F. Rock Driller | |
| GRADE 3 | |
| A. Driller - Coal | D. Faceman |
| B. Shooter | E. Dumper |
| C. Precision Mason (Construction) |
F. Shuttle Car Operator |
| GRADE 2 | |
| A. Motorman | D. Electrician Helper |
| B. Maintenance Trainee (Max. 6 Mos.) |
E. Mechanic Helper |
| C. Electrician Trainee (Max. 6 Mos.) |
|
| GRADE 1 | |
| A. Beltman | G. Pumper |
| B. Bonder | H. Timberman |
| C. Brakeman | I. Trackman |
| D. Bratticeman | J. Wireman |
| E. General Inside Labor | K. Labor - Unskilled |
| F. Mason | |
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