Coal production
73,035,714reported short tons
ACTIVE / OPERATOR PORTFOLIO
Thunder Basin Coal Company LLC
Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.
MSHA OPERATOR IDP24224
MINE PORTFOLIO
2 of 2 mines and facilities
2025-01-01 – 2026-10-18. 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.
| Mine | Location / type | Coal · short tons | Hours worked | Violations | Accident records | On-site inspection hours |
|---|---|---|---|---|---|---|
| Black Thunder4800977 · Active6/8 quarters reported | Campbell, WYSurface · MSHA: Coal (Bituminous) | 70,462,955 | 2,525,675 | 176 | 23 | 917.3 |
| Coal Creek Mine4801215 · Active6/8 quarters reported | Campbell, WYSurface · MSHA: Coal (Bituminous) | 2,572,759 | 107,835 | 26 | 0 | 237.8 |
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
2 of 2 mines with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Black Thunder42.69361, -105.26667Open map ↗
- Coal Creek Mine43.97194, -105.28250Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-18. All 2 mines listed under this operator were checked; 2 have reports in the available quarters. Totals use current ownership.
Hours worked
2,633,510reported employee hours
Tons per hour
27.73production ÷ hours worked
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
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 12,686,093 | 426,302 | 29.76 | 831 | 2/2 mines reporting |
| 2025 Q2 | 12,555,660 | 428,404 | 29.31 | 817 | 2/2 mines reporting |
| 2025 Q3 | 13,030,450 | 453,689 | 28.72 | 843 | 2/2 mines reporting |
| 2025 Q4 | 12,646,716 | 452,600 | 27.94 | 832 | 2/2 mines reporting |
| 2026 Q1 | 11,913,178 | 444,564 | 26.80 | 841 | 2/2 mines reporting |
| 2026 Q2 | 10,203,617 | 427,951 | 23.84 | 835 | 2/2 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-18
Violations
20235 significant & substantial (S&S)
Accident records
230 records classified as fatality
Proposed penalties · USD
100,504.00193 of 202 violations with amounts
On-site inspection hours
1,155.0013 inspections · 13 with hours
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
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 36 | 8 | 17,657.00 | 1 | 0 | 0 | — |
| 2025-Q2 | 14 | 3 | 9,823.00 | 2 | 0 | 1 | 278.0 |
| 2025-Q3 | 31 | 5 | 9,080.00 | 4 | 0 | 1 | 71.5 |
| 2025-Q4 | 60 | 3 | 17,039.00 | 5 | 0 | 3 | 417.5 |
| 2026-Q1 | 2 | 2 | 3,497.00 | 5 | 0 | 3 | 34.5 |
| 2026-Q2 | 50 | 12 | 43,408.00 | 4 | 0 | 3 | 302.8 |
| 2026-Q3 | 0 | 0 | — | 2 | 0 | 1 | 0.0 |
| 2026-Q4 * | 9 | 2 | — | 0 | 0 | 1 | 50.8 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
- Black Thunder · 4800977
77.603
- Black Thunder · 4800977
77.502-2
- Black Thunder · 4800977
77.400(a)
- Black Thunder · 4800977
77.1606(c)
- Black Thunder · 4800977
77.505
- Black Thunder · 4800977
77.1606(c)
- Black Thunder · 4800977
Regular Safety and Health Inspection · 50.8 on-site hours
- Black Thunder · 4800977
77.1605(l) · S&S
- Black Thunder · 4800977
77.602(a) · S&S
- Black Thunder · 4800977
77.1000
- Black Thunder · 4800977
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
the incident occurred when an employee was aligning and installing a 120Lb truck bed pivot pin into the left rear truck pivot bore. the pivot pin slipped during manual positioning and the employees' finger was smashed between the pin and the bore opening. the injury resulted in a near amputation of the right pinky fingertip near the first knuckle
- Black Thunder · 4800977
Verbal Hazard Complaint Inspections · 0.0 on-site hours
- Black Thunder · 4800977
SLIP OR FALL OF PERSON · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was exiting the pit bus at the beginning of shift when they slipped causing a small verifiable fracture to the fibula. Employee was able to return to work.
- Black Thunder · 4800977
FIRE · ACCIDENT ONLY
Accident narrative
A grass fire started at the rail road tracks and spread to the mine property. The fire could not be put out in 15 minutes.
- Black Thunder · 4800977
77.1110 · $432.00 proposed
- Black Thunder · 4800977
77.400(a) · $366.00 proposed
- Black Thunder · 4800977
77.1713(d)(1) · $504.00 proposed
- Black Thunder · 4800977
77.502 · $465.00 proposed
- Black Thunder · 4800977
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was walking down the boarding ladder of haul truck when EE slipped and injured EE's arm trying to catch self. Dr. appointment on 06/03/26 confirmed bicep tear.
- Black Thunder · 4800977
77.410(c) · $151.00 proposed
- Black Thunder · 4800977
77.1110 · $465.00 proposed
- Black Thunder · 4800977
77.502 · $465.00 proposed
- Black Thunder · 4800977
77.809 · $151.00 proposed
- Black Thunder · 4800977
77.1607(p) · $245.00 proposed
- Black Thunder · 4800977
77.404(a) · $193.00 proposed
Safety sources and definitions
MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.
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.
Quarterly receipts and quality
| Quarter | Short tons | Heat · Btu/lb | Sulfur % | Ash % | Delivered USD/ton | |
|---|---|---|---|---|---|---|
| 2025-Q3 * | 8,684,913 | 8,864 | 0.33 | 5.28 | 35.41 | |
| 2025-Q4 | 13,237,167 | 8,884 | 0.30 | 5.10 | 37.79 | |
| 2026-Q1 | 11,398,052 | 8,925 | 0.29 | 5.14 | 38.61 | |
| 2026-Q2 | 9,873,378 | 8,912 | 0.31 | 5.12 | 38.73 | |
| 2026-Q3 * | 4,402,781 | 8,918 | 0.28 | 4.90 | 38.38 |
| Month / source | Mine | Receiving plant / supplier | Short tons | Delivered USD/ton | Heat · Btu/lb | Sulfur % | Ash % | Purchase | Transport |
|---|---|---|---|---|---|---|---|---|---|
| 2026-07EIA row 12101 · preliminary | BLACK THUNDER4800977 | Sherburne County6090 · MN · CORE NATURAL RESOURCES, INC | 14,142 | 46.04 | 9,017 | 0.21 | 4.30 | ContractSUB | Rail |
| 2026-07EIA row 12102 · preliminary | BLACK THUNDER4800977 | Sherburne County6090 · MN · CORE NATURAL RESOURCES, INC | 58,043 | 47.33 | 8,971 | 0.28 | 4.80 | ContractSUB | Rail |
| 2026-07EIA row 12110 · preliminary | BLACK THUNDER4800977 | Nebraska City6096 · NE · CORE NATURAL RESOURCES, INC | 103,642 | 26.62 | 8,920 | 0.25 | 4.90 | ContractSUB | Rail |
| 2026-07EIA row 12126 · preliminary | BLACK THUNDER4800977 | Flint Creek6138 · AR · CORE NATURAL RESOURCES, INC | 45,892 | 28.95 | 8,980 | 0.25 | 4.66 | ContractSUB | Rail |
| 2026-07EIA row 12142 · preliminary | BLACK THUNDER4800977 | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 45,456 | 63.38 | 9,016 | 0.35 | 4.70 | ContractSUB | Rail |
| 2026-07EIA row 12143 · preliminary | BLACK THUNDER4800977 | Coleto Creek6178 · TX · BLACK THUNDER - ARCH | 15,108 | —Not published | 9,060 | 0.18 | 4.50 | ContractSUB | Rail |
| 2026-07EIA row 12150 · preliminary | COAL CREEK MINE4801215 | Fayette Power Project6179 · TX · ARCH | 32,651 | 28.92 | 8,230 | 0.37 | 6.90 | SpotSUB | Rail |
| 2026-07EIA row 12151 · preliminary | COAL CREEK MINE4801215 | Fayette Power Project6179 · TX · ARCH | 32,442 | 29.13 | 8,313 | 0.40 | 6.80 | SpotSUB | Rail |
| 2026-07EIA row 12181 · preliminary | BLACK THUNDER4800977 | Laramie River Station6204 · WY · ARCH | 129,401 | 23.31 | 8,981 | 0.23 | 4.50 | ContractSUB | Rail / Truck |
| 2026-07EIA row 12196 · preliminary | BLACK THUNDER4800977 | Ottumwa6254 · IA · ARCH COAL SALES | 60,568 | 35.54 | 8,983 | 0.24 | 4.50 | ContractSUB | Rail |
| 2026-07EIA row 12215 · preliminary | BLACK THUNDER4800977 | Scherer6257 · GA · ARCH/CORE SALES INC | 32,161 | 60.60 | 8,994 | 0.25 | 4.90 | ContractSUB | Rail |
| 2026-07EIA row 12237 · preliminary | BLACK THUNDER4800977 | Independence Steam Electric Station6641 · AR · ARCH COAL SALES | 64,998 | 43.97 | 8,970 | 0.23 | 4.80 | ContractSUB | Rail |
| 2026-07EIA row 12238 · preliminary | BLACK THUNDER4800977 | Independence Steam Electric Station6641 · AR · ARCH COAL SALES | 16,360 | 42.57 | 9,105 | 0.21 | 4.30 | ContractSUB | Rail |
| 2026-07EIA row 12239 · preliminary | BLACK THUNDER4800977 | Independence Steam Electric Station6641 · AR · ARCH COAL SALES | 48,633 | 43.67 | 9,005 | 0.23 | 4.30 | ContractSUB | Rail |
| 2026-07EIA row 12253 · preliminary | BLACK THUNDER4800977 | Sikeston Power Station6768 · MO · ARCH | 102,051 | 47.48 | 9,000 | 0.50 | 4.40 | ContractSUB | Rail |
| 2026-07EIA row 12437 · preliminary | BLACK THUNDER4800977 | Columbia (WI)8023 · WI · ARCH COAL SALES | 55,253 | 45.15 | 8,979 | 0.21 | 4.60 | ContractSUB | Rail |
| 2026-07EIA row 12438 · preliminary | BLACK THUNDER4800977 | Columbia (WI)8023 · WI · ARCH COAL SALES | 27,555 | 43.69 | 8,724 | 0.35 | 5.70 | ContractSUB | Rail |
| 2026-07EIA row 12493 · preliminary | BLACK THUNDER4800977 | Springerville8223 · AZ · CORE NATURAL RESOURCES, INC | 15,554 | 63.36 | 9,000 | 0.23 | 4.10 | ContractSUB | Rail |
| 2026-07EIA row 12548 · preliminary | BLACK THUNDER4800977 | Calvert City8837 · KY · ARCH COAL SALES | 31,529 | 36.46 | 9,021 | 0.26 | 4.80 | ContractSUB | Rail |
| 2026-07EIA row 12549 · preliminary | BLACK THUNDER4800977 | Calvert City8837 · KY · ARCH COAL SALES | 31,834 | 37.25 | 8,921 | 0.26 | 5.30 | ContractSUB | Rail |
| 2026-07EIA row 12590 · preliminary | BLACK THUNDER4800977 | Four Rivers Terminal8899 · KY · ARCH COAL SALES | 15,929 | 35.20 | 8,939 | 0.33 | 5.10 | ContractSUB | Rail |
| 2026-07EIA row 13042 · preliminary | BLACK THUNDER4800977 | Elm Road Generating Station56068 · WI · CORE SALES LLC | 129,962 | 43.25 | 8,995 | 0.23 | 4.70 | ContractSUB | Rail |
| 2026-07EIA row 13073 · preliminary | BLACK THUNDER4800977 | TS Power Plant56224 · NV · BLACK THUNDER - ARCH | 58,602 | —Not published | 8,930 | 0.27 | 4.80 | ContractSUB | Rail |
| 2026-07EIA row 13096 · preliminary | BLACK THUNDER4800977 | John W Turk Jr Power Plant56564 · AR · CORE NATURAL RESOURCES, INC | 44,104 | 35.11 | 9,050 | 0.24 | 4.30 | ContractSUB | Rail |
| 2026-06EIA row 9449 · preliminary | BLACK THUNDER4800977 | Holcomb108 · KS · BLACK THUNDER WEST | 30,661 | 32.08 | 8,660 | 0.35 | 5.70 | ContractSUB | Rail |
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.
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. All producing annual records in this selection have estimates. Annual price data uses a separate window from the MSHA charts.
| Mine / county | Annual production · tons | County FOB · USD/ton | Est. sales · tons | Est. coal revenue · USD | Basis / availability |
|---|---|---|---|---|---|
| Black Thunder4800977 · Campbell, Wyoming | 44,480,976 | 13.96 | 44,477,605 | 620,907,365 | County allocation estimate26.16% of eligible county production11 eligible mines / 11 sales respondents |
| Coal Creek Mine4801215 · Campbell, Wyoming | 1,552,309 | 13.96 | 1,552,191 | 21,668,591 | County allocation estimate0.91% of eligible county production11 eligible mines / 11 sales respondents |
Method, assumptions and source records
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.