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U.S. MINING ENTITIES / CONTROLLER / 0146581

ACTIVE / CONTROLLER PORTFOLIO

Westmoreland Mining Holdings LLC

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

MSHA CONTROLLER ID0146581

MINE PORTFOLIO

4 of 4 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
Absaloka Mine2400910 · Active6/8 quarters reportedBig Horn, MTSurface · MSHA: Coal (Bituminous)155,80473,769181134.3
Beulah Mine3200043 · Active6/8 quarters reportedMercer, NDSurface · MSHA: Coal (Lignite)081,495341118.3
Rosebud Mine & Crusher/Conveyor2401747 · Active6/8 quarters reportedRosebud, MTSurface · MSHA: Coal (Bituminous)8,132,729803,142338493.0
Savage Mine2400106 · Active6/8 quarters reportedRichland, MTSurface · MSHA: Coal (Lignite)022,1344255.3

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

4 of 4 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 4 mines listed under this controller were checked; 4 have reports in the available quarters. Totals use current ownership.

Coal production

8,288,533

reported short tons

  1. 2025 Q11,747,736
  2. 2025 Q2977,169
  3. 2025 Q31,787,320
  4. 2025 Q41,616,900
  5. 2026 Q11,214,528
  6. 2026 Q2944,880
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Hours worked

980,540

reported employee hours

  1. 2025 Q1186,237
  2. 2025 Q2164,331
  3. 2025 Q3173,934
  4. 2025 Q4165,746
  5. 2026 Q1161,283
  6. 2026 Q2129,009
  7. 2026 Q3—No usable value reported
  8. 2026 Q4 *—No usable value reported

Tons per hour

8.45

production ÷ hours worked

  1. 2025 Q19.38
  2. 2025 Q25.95
  3. 2025 Q310.28
  4. 2025 Q49.76
  5. 2026 Q17.53
  6. 2026 Q27.32
  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 Westmoreland Mining Holdings LLC
QuarterCoal (short tons)Hours workedTons / hourAvg. employeesCoverage
2025 Q11,747,736186,2379.384074/4 mines reporting
2025 Q2977,169164,3315.953844/4 mines reporting
2025 Q31,787,320173,93410.283784/4 mines reporting
2025 Q41,616,900165,7469.763674/4 mines reporting
2026 Q11,214,528161,2837.533584/4 mines reporting
2026 Q2944,880129,0097.322954/4 mines reporting
2026 Q3————No report
2026 Q4————No report

Safety and enforcement

2025-01-01 – 2026-10-13

Violations

89

12 significant & substantial (S&S)

  1. 2025 Q127
  2. 2025 Q214
  3. 2025 Q316
  4. 2025 Q47
  5. 2026 Q110
  6. 2026 Q26
  7. 2026 Q39
  8. 2026 Q4 *0

Accident records

12

0 records classified as fatality

  1. 2025 Q13
  2. 2025 Q21
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q15
  6. 2026 Q22
  7. 2026 Q31
  8. 2026 Q4 *0

Proposed penalties · USD

35,724.00

82 of 89 violations with amounts

  1. 2025 Q17,588
  2. 2025 Q210,457
  3. 2025 Q34,899
  4. 2025 Q45,358
  5. 2026 Q15,302
  6. 2026 Q21,010
  7. 2026 Q31,110
  8. 2026 Q4 *—

On-site inspection hours

800.75

22 inspections · 22 with hours

  1. 2025 Q1206.75
  2. 2025 Q233.25
  3. 2025 Q3183.00
  4. 2025 Q4125.50
  5. 2026 Q153.25
  6. 2026 Q241.50
  7. 2026 Q3157.50
  8. 2026 Q4 *—

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-Q12727,588.00304206.8
2025-Q214310,457.0010433.3
2025-Q31624,899.00003183.0
2025-Q4735,358.00003125.5
2026-Q11025,302.0050253.3
2026-Q2601,010.0020441.5
2026-Q3901,110.00102157.5
2026-Q4 *00—000—

Most cited CFR sections

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

SectionViolationsS&S
30 CFR 77.404Machinery and equipment; operation and maintenance.100
30 CFR 77.1110Examination and maintenance of firefighting equipment.80
30 CFR 77.1607Loading and haulage equipment; operation.81
30 CFR 77.502Electric equipment; examination, testing, and maintenance.70
30 CFR 77.1104Accumulations of combustible materials.62
30 CFR 77.1605Loading and haulage equipment; installations.63
30 CFR 77.1102Warning signs; smoking and open flame.50
30 CFR 48.31Hazard training.40
30 CFR 77.1606Loading and haulage equipment; inspection and maintenance.42
30 CFR 48.9Records of training.30

Safety activity

  1. violation9934441
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.404(a)

  2. violation9934440
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.404(a)

  3. violation9123517
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.1605(k)

  4. violation9732640
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.1102

  5. violation9732639
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.1007(b)

  6. violation9732638
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.1110

  7. violation9123508
    Rosebud Mine & Crusher/Conveyor · 2401747

    77.400(a)

  8. inspectionF009DAF
    Rosebud Mine & Crusher/Conveyor · 2401747

    Regular Safety and Health Inspection · 127.5 on-site hours

  9. violation5212223
    Beulah Mine · 3200043

    77.904 · $959.00 proposed

  10. violation5212222
    Beulah Mine · 3200043

    77.1102 · $151.00 proposed

  11. inspectionF03B8CB
    Beulah Mine · 3200043

    Regular Safety and Health Inspection · 30.0 on-site hours

  12. accident220262110033
    Rosebud Mine & Crusher/Conveyor · 2401747

    FIRE · ACCIDENT ONLY

    Accident narrative

    Lighting strike cause grass fire that burned on edge of mine permit. Was put out by Rosebud County Wildland fire

  13. violation5033788
    Absaloka Mine · 2400910

    77.502-2 · $151.00 proposed

  14. violation5033787
    Absaloka Mine · 2400910

    77.1605(b) · $177.00 proposed

  15. violation5033786
    Absaloka Mine · 2400910

    77.1110 · $177.00 proposed

  16. violation5033785
    Absaloka Mine · 2400910

    77.1110 · $177.00 proposed

  17. violation5033784
    Absaloka Mine · 2400910

    77.1607(n) · $177.00 proposed

  18. inspectionF010EEB
    Absaloka Mine · 2400910

    Regular Safety and Health Inspection · 24.5 on-site hours

  19. accident220261730050
    Absaloka Mine · 2400910

    EXPLODING VESSELS UNDER PRESSURE · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Customer asked Employee to swap hose fittings on a mine-owned pump. After EE finished, Employee noticed a cam hose fitting was leaking. Employee used a tool to tap the ear of the cam hose. The leak stopped, but as EE walked away, the cam hose fitting ruptured. Employee was struck by either the hose or cam fitting, causing a laceration to EEs face and bruises to EEs torso and knee.

  20. accident220261680028
    Rosebud Mine & Crusher/Conveyor · 2401747

    SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Field Mechanic was boarding EE's service truck and slipped injuring EE's right bicep.

  21. inspectionF0175F0
    Beulah Mine · 3200043

    Verbal Hazard Complaint Inspections · 5.5 on-site hours

  22. inspectionF002D84
    Rosebud Mine & Crusher/Conveyor · 2401747

    Spot Inspection · 0.0 on-site hours

  23. violation5038917
    Savage Mine · 2400106

    77.1607(n) · $151.00 proposed

  24. inspectionF03AB12
    Savage Mine · 2400106

    Regular Safety and Health Inspection · 11.5 on-site hours

  25. accident220260930002
    Rosebud Mine & Crusher/Conveyor · 2401747

    POWERED HAULAGE · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EE reported a strained back from being loaded while operating end dump

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 TONS5,210,25917 rows · 2 receiving plants
HEAT CONTENT · BTU/LB8,671Weighted by reported tons
SULFUR / ASH · % BY WEIGHT0.68 / 9.12Separate averages over measured receipts
DELIVERED COST · USD/TON—0.0% of reported tons have usable costs
Quarterly receipts and quality
QuarterShort tonsHeat · Btu/lbSulfur %Ash %Delivered USD/ton
2025-Q3 *1,128,7358,6670.689.31—
2025-Q41,590,0208,6930.669.01—
2026-Q11,138,6058,6640.719.08—
2026-Q2796,8688,6290.689.06—
2026-Q3 *556,0318,6950.669.20—
Month / sourceMineReceiving plant / supplierShort tonsDelivered USD/tonHeat · Btu/lbSulfur %Ash %PurchaseTransport
2026-07EIA row 12085 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY556,031—Not published8,6950.669.20ContractSUBTram/conveyor
2026-06EIA row 10178 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY302,824—Not published8,6450.688.80ContractSUBTram/conveyor
2026-05EIA row 8327 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY195,716—Not published8,5950.709.70ContractSUBTram/conveyor
2026-04EIA row 6523 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY298,328—Not published8,6350.688.90ContractSUBTram/conveyor
2026-03EIA row 4696 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY351,840—Not published8,6250.739.30ContractSUBTram/conveyor
2026-02EIA row 2758 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY328,976—Not published8,6700.738.80ContractSUBTram/conveyor
2026-01EIA row 778 · preliminaryROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY457,789—Not published8,6900.689.10ContractSUBTram/conveyor
2025-12EIA row 34820 · finalROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY378,236—Not published8,6600.709.00ContractSUBTram/conveyor
2025-12EIA row 36384 · finalABSALOKA MINE2400910Hardin Generator Project55749 · MT · WESTMORELAND RESOURCES9,838—Not published8,5500.609.80ContractSUBTruck
2025-11EIA row 31826 · finalROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY567,669—Not published8,6900.649.30ContractSUBTram/conveyor
2025-11EIA row 33386 · finalABSALOKA MINE2400910Hardin Generator Project55749 · MT · WESTMORELAND RESOURCES14,765—Not published8,5500.609.80ContractSUBTruck
2025-10EIA row 28880 · finalROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY603,807—Not published8,7250.668.70ContractSUBTram/conveyor
2025-10EIA row 30418 · finalABSALOKA MINE2400910Hardin Generator Project55749 · MT · WESTMORELAND RESOURCES15,705—Not published8,5500.609.80ContractSUBTruck
2025-09EIA row 25811 · finalROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY474,943—Not published8,6700.719.30ContractSUBTram/conveyor
2025-09EIA row 27409 · finalABSALOKA MINE2400910Hardin Generator Project55749 · MT · WESTMORELAND RESOURCES12,354—Not published8,5500.609.80ContractSUBTruck
2025-08EIA row 22682 · finalROSEBUD MINE&CRUSHER/CONVEYOR2401747Colstrip6076 · MT · WESTERN ENERGY625,177—Not published8,6700.669.30ContractSUBTram/conveyor
2025-08EIA row 24329 · finalABSALOKA MINE2400910Hardin Generator Project55749 · MT · WESTMORELAND RESOURCES16,261—Not published8,5500.609.80ContractSUBTruck

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. 2 current coal members have no matching annual record; their coverage is unknown. Annual price data uses a separate window from the MSHA charts.

Mine / countyAnnual production · tonsCounty FOB · USD/tonEst. sales · tonsEst. coal revenue · USDBasis / availability
Savage Mine2400106 · Location unavailable————No matching annual production record
Absaloka Mine2400910 · Big Horn, Montana883,576———County sales or price not published2 eligible mines / 2 sales respondents
Rosebud Mine & Crusher/Conveyo2401747 · Rosebud, Montana5,978,039———County sales or price not published1 eligible mines / 1 sales respondents
Beulah Mine3200043 · Location unavailable————No matching annual production record
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

4 linked operators.

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

OPERATOR / 0079503Westmoreland Absaloka Mining LLC1 selected mine →OPERATOR / P24679Westmoreland Beulah Mining LLC1 selected mine →OPERATOR / P24656Westmoreland Rosebud Mining LLC1 selected mine →OPERATOR / P24672Westmoreland Savage Mining LLC1 selected mine →