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U.S. MINING ENTITIES / OPERATOR / P23684

ACTIVE / OPERATOR PORTFOLIO

CANYON FUEL COMPANY LLC

Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.

MSHA OPERATOR IDP23684

MINE PORTFOLIO

3 of 3 mines and facilities

2025-01-01 – 2026-10-13. Active records; production reporting is not required.

Material, method and type filters apply to this table. The portfolio’s status applies to the entire page. GEM fields describe their own release, not the selected MSHA year.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
CASTLE VALLEY PREP PLANT4202455 · Active6/8 quarters reportedCarbon, UTFacility · MSHA: Coal (Bituminous)022,2760049.5
SKYLINE MINE #34201566 · Active6/8 quarters reportedCarbon, UTUnderground · MSHA: Coal (Bituminous)3,131,2031,210,611275132,536.5
SUFCO4200089 · Active6/8 quarters reportedSevier, UTUnderground · MSHA: Coal (Bituminous)5,173,8551,293,228349213,416.8

Production and hours sum available quarterly reports. — means unavailable; zero safety records means none in the selected imported period. Ownership reflects the current MSHA record.

LOCATION

Portfolio map

3 of 3 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

2025 Q1 – 2026 Q4

JSONCSV

Database snapshot · 2026-10-13. All 3 mines listed under this operator were checked; 3 have reports in the available quarters. Totals use current ownership.

Coal production

8,305,058

reported short tons

  1. 2025 Q11,644,681
  2. 2025 Q21,538,676
  3. 2025 Q31,935,001
  4. 2025 Q41,462,438
  5. 2026 Q1889,069
  6. 2026 Q2835,193
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

2,526,115

reported employee hours

  1. 2025 Q1494,548
  2. 2025 Q2449,994
  3. 2025 Q3526,348
  4. 2025 Q4434,380
  5. 2026 Q1356,491
  6. 2026 Q2264,354
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

3.29

production ÷ hours worked

  1. 2025 Q13.33
  2. 2025 Q23.42
  3. 2025 Q33.68
  4. 2025 Q43.37
  5. 2026 Q12.49
  6. 2026 Q23.16
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.

Quarterly data and reporting coverage
Quarterly production, employment and reporting coverage for Canyon Fuel Company Llc
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q11,644,681494,5483.338493/3 mines reporting
2025 Q21,538,676449,9943.428503/3 mines reporting
2025 Q31,935,001526,3483.688493/3 mines reporting
2025 Q41,462,438434,3803.378253/3 mines reporting
2026 Q1889,069356,4912.497163/3 mines reporting
2026 Q2835,193264,3543.165073/3 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-13

Violations

624

63 significant & substantial (S&S)

  1. 2025 Q1106
  2. 2025 Q296
  3. 2025 Q3126
  4. 2025 Q497
  5. 2026 Q166
  6. 2026 Q255
  7. 2026 Q364
  8. 2026 Q4 *14

Accident records

34

0 records classified as fatality

  1. 2025 Q17
  2. 2025 Q26
  3. 2025 Q36
  4. 2025 Q46
  5. 2026 Q13
  6. 2026 Q21
  7. 2026 Q35
  8. 2026 Q4 *0

Proposed penalties · USD

391,335.00

586 of 624 violations with amounts

  1. 2025 Q1110,560
  2. 2025 Q242,322
  3. 2025 Q388,184
  4. 2025 Q492,179
  5. 2026 Q129,153
  6. 2026 Q214,869
  7. 2026 Q314,068
  8. 2026 Q4 *—

On-site inspection hours

6,002.75

49 inspections · 49 with hours

  1. 2025 Q1873.75
  2. 2025 Q2897.75
  3. 2025 Q31,078.25
  4. 2025 Q41,053.50
  5. 2026 Q1739.25
  6. 2026 Q2641.25
  7. 2026 Q3677.50
  8. 2026 Q4 *41.50

Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.

Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q110610110,560.00703873.8
2025-Q296842,322.00606897.8
2025-Q31261388,184.006091,078.3
2025-Q4971292,179.006071,053.5
2026-Q1661029,153.00306739.3
2026-Q255614,869.001010641.3
2026-Q364314,068.00506677.5
2026-Q4 *141—00241.5

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

SectionViolationsS&S
30 CFR 75.400Accumulation of combustible materials.864
30 CFR 75.333Ventilation controls.550
30 CFR 75.1725Machinery and equipment; operation and maintenance.342
30 CFR 75.370Mine ventilation plan; submission and approval.322
30 CFR 75.512Electric equipment; examination, testing and maintenance.311
30 CFR 75.1731Maintenance of belt conveyors and belt conveyor entries.262
30 CFR 75.503Permissible electric face equipment; maintenance.230
30 CFR 75.360Preshift examination at fixed intervals.221
30 CFR 75.380Escapeways; bituminous and lignite mines.2010
30 CFR 75.1909Nonpermissible diesel-powered equipment; design and performance requirements.160

Safety activity

  1. violation5036043
    SUFCO · 4200089

    75.400

  2. violation5035197
    SUFCO · 4200089

    75.601-1

  3. violation5035196
    SUFCO · 4200089

    75.360(g)

  4. violation5030954
    SKYLINE MINE #3 · 4201566

    75.1100-3

  5. violation5035195
    SUFCO · 4200089

    75.360(g)

  6. violation5036165
    SUFCO · 4200089

    75.380(d)(4)

  7. violation5036164
    SUFCO · 4200089

    75.1731(b)

  8. violation5036163
    SUFCO · 4200089

    75.202(a) · S&S

  9. violation5036162
    SUFCO · 4200089

    75.1725(a)

  10. violation5036161
    SUFCO · 4200089

    75.400

  11. violation5035194
    SUFCO · 4200089

    75.400

  12. violation5035193
    SUFCO · 4200089

    75.1725(a)

  13. violation5035192
    SUFCO · 4200089

    75.370(a)(1)

  14. violation5035191
    SUFCO · 4200089

    75.400

  15. inspectionF007265
    SUFCO · 4200089

    Regular Safety and Health Inspection · 27.5 on-site hours

  16. inspectionF020381
    SKYLINE MINE #3 · 4201566

    Regular Safety and Health Inspection · 14.0 on-site hours

  17. inspectionF01E44B
    SUFCO · 4200089

    Compliance Follow-up Inspection · 2.3 on-site hours

  18. violation5030710
    SUFCO · 4200089

    75.1916(c)

  19. inspectionF00E3EA
    SKYLINE MINE #3 · 4201566

    Compliance Follow-up Inspection · 6.0 on-site hours

  20. violation5036038
    SUFCO · 4200089

    75.1914(f)(2)

  21. accident220262520001
    SUFCO · 4200089

    POWERED HAULAGE · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    While traveling in the mantrip, the mantrip was unable to maneuver the turn and struck a rib and power center, EE was thrusted forward from EE's seat.

  22. accident220262510022
    SUFCO · 4200089

    POWERED HAULAGE · DAYS AWAY FROM WORK ONLY

    Accident narrative

    While traveling in the mantrip, the mantrip was unable to maneuver the turn and struck a rib and power center, employee was thrusted forward from their seat.

  23. accident220262510021
    SUFCO · 4200089

    POWERED HAULAGE · DAYS AWAY FROM WORK ONLY

    Accident narrative

    While traveling in the mantrip, the mantrip was unable to maneuver the turn and struck a rib and power center, employee was thrusted forward from their seat

  24. accident220262520003
    SUFCO · 4200089

    POWERED HAULAGE · DAYS AWAY FROM WORK ONLY

    Accident narrative

    While traveling in the mantrip, the mantrip was unable to maneuver the turn and struck a rib and power center, EE was thrusted forward from EE's seat.

  25. inspectionF01E44A
    SUFCO · 4200089

    Non-Fatal Accident Investigation · 5.5 on-site hours

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.

Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.

Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.

S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.

Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.

Portfolio totals use current mine membership, including events before the current owner or operator's tenure.

CFR headings link to the current Title 30 index; they are not historical legal determinations.

EIA-923 · COAL RECEIPTS

Coal shipments and quality

Receipts reported by power plants and terminals, matched by MSHA mine ID.

Latest EIA month: 2026-07Source checked 2026-10-13 · publication lag differs from MSHA.

REPORTED RECEIPTS · SHORT TONS4,473,46036 rows · 3 receiving plants
HEAT CONTENT · BTU/LB11,227Weighted by reported tons
SULFUR / ASH · % BY WEIGHT0.82 / 11.88Separate averages over measured receipts
DELIVERED COST · USD/TON84.63100.0% of reported tons have usable costs
Quarterly receipts and quality
QuarterShort tonsHeat · Btu/lbSulfur %Ash %Delivered USD/ton
2025-Q3 *831,28510,8751.0112.6782.41
2025-Q41,277,15111,1320.8711.8381.84
2026-Q1987,08911,4190.6611.1985.94
2026-Q2991,35711,3240.7712.2187.61
2026-Q3 *386,57811,5580.7511.2987.65
Month / sourceMineReceiving plant / supplierShort tonsDelivered USD/tonHeat · Btu/lbSulfur %Ash %PurchaseTransport
2026-07EIA row 12137 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO315,97087.5111,4540.7011.80ContractBITTruck
2026-07EIA row 12485 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO70,60888.2812,0240.979.00ContractBITTruck
2026-06EIA row 10229 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO312,88487.6511,4720.7011.80ContractBITTruck
2026-06EIA row 10536 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO54,94190.3710,6851.0415.10ContractBITTruck
2026-06EIA row 10537 · preliminarySKYLINE MINE #34201566Huntington8069 · UT · WOLVERINE FUELS LLC.1,07090.3712,6640.519.00ContractBITTruck
2026-05EIA row 8368 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO236,92386.5611,3240.7011.80ContractBITTruck
2026-05EIA row 8650 · preliminarySKYLINE MINE #34201566Huntington8069 · UT · WOLVERINE FUELS LLC.39,37589.6411,5281.1310.40ContractBITTruck
2026-05EIA row 8651 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO53,98389.6410,5791.1216.30ContractBITTruck
2026-04EIA row 6569 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO230,47987.0811,4020.7011.80ContractBITTruck
2026-04EIA row 6872 · preliminarySKYLINE MINE #34201566Huntington8069 · UT · WOLVERINE FUELS LLC.23,37887.8312,1720.378.80ContractBITTruck
2026-04EIA row 6873 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO38,32487.8310,8541.2414.80ContractBITTruck
2026-03EIA row 4746 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO185,28386.5311,3200.7011.80ContractBITTruck
2026-03EIA row 5041 · preliminarySKYLINE MINE #34201566Huntington8069 · UT · SKYLINE MINE6,15787.5111,7710.449.10ContractBITTruck
2026-03EIA row 5042 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO36,73887.5211,8471.089.40ContractBITTruck
2026-02EIA row 2815 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO241,22886.3611,2980.7011.80ContractBITTruck
2026-02EIA row 3139 · preliminarySKYLINE MINE #34201566Huntington8069 · UT · SKYLINE MINE35,55687.1411,9940.369.00ContractBITTruck
2026-02EIA row 3140 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO41,28587.3411,7491.079.50ContractBITTruck
2026-01EIA row 835 · preliminarySUFCO4200089Hunter6165 · UT · SUFCO279,75583.6311,1570.7011.80ContractBITTruck
2026-01EIA row 1163 · preliminarySUFCO4200089Huntington8069 · UT · SUFCO52,88587.6011,9570.367.90ContractBITTruck
2026-01EIA row 1164 · preliminarySKYLINE MINE #34201566Huntington8069 · UT · SKYLINE MINE108,20287.6011,7930.3910.90ContractBITTruck
2025-12EIA row 34866 · finalSUFCO4200089Hunter6165 · UT · SUFCO306,10883.6311,1570.8111.80ContractBITTruck
2025-12EIA row 35466 · finalSUFCO4200089Huntington8069 · UT · SUFCO42,35985.4110,6151.2114.20ContractBITTruck
2025-12EIA row 35467 · finalSKYLINE MINE #34201566Huntington8069 · UT · SKYLINE MINE69,37385.4312,0160.449.50ContractBITTruck
2025-11EIA row 31874 · finalSUFCO4200089Hunter6165 · UT · SUFCO304,25178.2911,1620.8211.50ContractBITTruck
2025-11EIA row 32452 · finalSKYLINE MINE #34201566Huntington8069 · UT · SUFCO41,05882.8510,7491.1512.80ContractBITTruck

Delivered cost includes transport and is not mine revenue. Missing prices remain blank. * Fewer than three months are published in the selected quarter. Receipts reflect the months EIA has published; an unfinished quarter is not comparable with a full quarter. Portfolio matches use current ownership.

Coverage, sources and calculations
  • Reported coal receipts at EIA-923 power plants/terminals; this is not a census of mine shipments, exports or metallurgical sales.
  • Matches use only the published MSHA ID, normalized to seven digits. Unidentified mine origins remain in the source table but are not assigned to a mine.
  • Portfolio attribution uses current MSHA ownership, not ownership at the shipment date. Receipts and production can differ because of timing, stocks and coverage.
  • Quality means are weighted by positive reported tons with that measurement. Delivered cost uses only rows with published cost, positive heat and positive tons; missing/withheld costs are never zero-filled.
  • USD/ton = (cents/MMBtu ÷ 100) × MMBtu/ton. This is plant delivered cost, not mine sales price or revenue.
  • Receipt month is as published, including records supplied by annual respondents. Recent months are preliminary and subject to revision. Missing rows do not prove zero shipments.

Imported releases start 2008-01. This window includes 12 published months. EIA releases · Survey instructions

  • 2026 · preliminary · EIA923_Schedules_2_3_4_5_M_07_2026_21SEP2026.xlsx · Page 5 Fuel Receipts and Costs
  • 2025 · final · EIA923_Schedules_2_3_4_5_M_12_2025_Final.xlsx · Page 5 Fuel Receipts and Costs

EIA ANNUAL COAL REPORT · 2024

Coal prices and estimated revenue

Annual county prices and a production-based allocation of county coal sales.

Latest priced year: 2024Source checked 2026-10-13. Prices apply only to their calendar year.

FOB PRICE BENCHMARK · USD/TON—Weighted by estimated sales of covered mines
ESTIMATED SALES · SHORT TONS—Allocated from published county sales
ESTIMATED COAL REVENUE · USD—Covered mines only · not reported revenue
ANNUAL PRODUCTION COVERED0.0%0 of 2 producing annual mine records

The estimate assumes each eligible mine receives its county-average price and shares county sales in proportion to production. Actual sales and prices can differ substantially. Unavailable estimates are excluded; this is not a total for the whole portfolio. Annual price data uses a separate window from the MSHA charts.

Mine / countyAnnual production · tonsCounty FOB · USD/tonEst. sales · tonsEst. coal revenue · USDBasis / availability
Sufco4200089 · Sevier, Utah3,099,164———County sales or price not published1 eligible mines / 1 sales respondents
Skyline Mine #34201566 · Carbon, Utah2,963,808———County sales or price not published1 eligible mines / 1 sales respondents
Castle Valley Prep Plant4202455 · Carbon, Utah0———Preparation plant1 eligible mines / 1 sales respondents
Method, assumptions and source records
  1. This is an annual county-sales allocation, not reported mine or company revenue. Currency is nominal USD in the source year; quantities are short tons.
  2. Mine share = same-year annual mine production / eligible same-county production. Estimated sales = published county sales × share. Estimated coal revenue = estimated sales × published county average FOB price.
  3. The model assumes eligible mines share county sales in proportion to production and receive the county-average price. Matching mine counts is a check, not proof of identical respondents. Mine quality, contracts and sales timing can differ substantially. No statistical confidence interval is implied.
  4. FOB excludes transport and insurance. EIA-923 delivered costs do not enter this model. No grade premium, state/national fallback, quarterly apportionment or carry-forward to a later year is applied.
  5. Eligibility follows the source's production threshold and excludes preparation-only and refuse operations. Withheld values, inconsistent county counts and missing/ambiguous locations produce no estimate.
  6. County sales are published in thousands of tons and prices to cents. Calculations retain precision, but the inputs are rounded and the allocation is approximate.
  7. Portfolio attribution uses current MSHA ownership, not ownership during the sales year. Covered-mine sums exclude unavailable estimates and must not be read as whole-company revenue. Coverage denominators use the annual EIA mine-production release.

Sales-reporting threshold: 50,000 short tons per mine in 2024. Withheld sales or prices stay unavailable.

EIA Table 30 · county sales and FOB prices · EIA annual mine production · Release index

Annual report released November 19, 2025. Method: county-sales-allocation-v1. JSON and CSV preserve source row numbers and file checksums.

SELECTED PORTFOLIO

1 linked controller.

Relationships reflect the selected mine status and current MSHA controller/operator fields.

CONTROLLER / 0110263Wolverine Fuels LLC3 selected mines →