MINE DETAILS
Spring Creek Mine
MSHA MINE ID2401457
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Spring Creek Mine45.11694, -106.89889Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.
Coal production
15,085,536reported short tons
Hours worked
785,254reported employee hours
Tons per hour
19.21production ÷ 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 | 2,299,824 | 135,500 | 16.97 | 270 | 1/1 mines reporting |
| 2025 Q2 | 2,913,643 | 136,218 | 21.39 | 282 | 1/1 mines reporting |
| 2025 Q3 | 2,909,358 | 138,163 | 21.06 | 269 | 1/1 mines reporting |
| 2025 Q4 | 2,287,026 | 121,221 | 18.87 | 262 | 1/1 mines reporting |
| 2026 Q1 | 2,272,495 | 123,980 | 18.33 | 253 | 1/1 mines reporting |
| 2026 Q2 | 2,403,190 | 130,172 | 18.46 | 259 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
183 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
8,094.0018 of 18 violations with amounts
On-site inspection hours
270.757 inspections · 7 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 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q3 | 10 | 1 | 2,606.00 | 4 | 0 | 2 | 105.5 |
| 2025-Q4 | 0 | 0 | — | 1 | 0 | 1 | 3.5 |
| 2026-Q1 | 5 | 1 | 2,002.00 | 0 | 0 | 1 | 75.8 |
| 2026-Q2 | 0 | 0 | — | 0 | 0 | 1 | 4.0 |
| 2026-Q3 | 3 | 1 | 3,486.00 | 0 | 0 | 2 | 82.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
77.400(a) · $151.00 proposed
77.204 · S&S · $3,184.00 proposed
Regular Safety and Health Inspection · 74.0 on-site hours
77.107-1 · $151.00 proposed
Verbal Hazard Complaint Inspections · 8.0 on-site hours
Verbal Hazard Complaint Inspections · 4.0 on-site hours
77.404(c) · S&S · $1,219.00 proposed
77.400(d) · $288.00 proposed
77.1110 · $151.00 proposed
77.1104 · $151.00 proposed
77.1110 · $193.00 proposed
Regular Safety and Health Inspection · 75.8 on-site hours
Verbal Hazard Complaint Inspections · 3.5 on-site hours
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
EE was cutting rubber skirting with a box cutter style knife. The knife slipped and cut through the welding gloves they were wearing. EE received 5 sutures to close a laceration on the back of their left hand above the thumb.
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
The cutoff wheel fractured during grinding, and a fragment struck the employee's right arm, causing a laceration that required sutures to close. The disc had the proper RPM rating for the grinder, and the employee was wearing all necessary PPE at the time of the incident.
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
EE was replacing a single point lubricator on a plant roller bearing cap. While withdrawing their hand their right index finger contacted the zero speed sensor mount causing a laceration requiring 5 sutures to close.
Spot Inspection · 6.0 on-site hours
77.1607(b) · S&S · $1,219.00 proposed
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
EE was pushing dirt off a coal fender to bury warm coal when the fender gave out and the dozer slide off sideways. The dozer overturned landing upright on the tracks. EE sustained a 1 inch laceration on their scalp requiring a suture to close.
FIRE · ACCIDENT ONLY
Accident narrative
A coal smoker was discovered in the ramp 20 waste dump. Dozer was walked over to bury the smoker. Smoker was extinguished but took longer than 30 minutes. No people, equipment or property was threatened at anytime.
77.404(a) · $151.00 proposed
77.404(a) · $151.00 proposed
77.505 · $165.00 proposed
77.502-2 · $151.00 proposed
77.1301(c)(6) · $165.00 proposed
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.
Quarterly receipts and quality
| Quarter | Short tons | Heat · Btu/lb | Sulfur % | Ash % | Delivered USD/ton | |
|---|---|---|---|---|---|---|
| 2025-Q3 * | 1,118,934 | 9,389 | 0.33 | 5.52 | 47.14 | |
| 2025-Q4 | 712,550 | 9,233 | 0.31 | 5.81 | 46.84 | |
| 2026-Q1 | 445,873 | 9,302 | 0.35 | 5.02 | 43.61 | |
| 2026-Q2 | 463,999 | 9,285 | 0.33 | 5.00 | 50.09 | |
| 2026-Q3 * | 137,898 | 9,320 | 0.35 | 5.34 | 50.90 |
| Month / source | Receiving plant / supplier | Short tons | Delivered USD/ton | Heat · Btu/lb | Sulfur % | Ash % | Purchase | Transport |
|---|---|---|---|---|---|---|---|---|
| 2026-07EIA row 11644 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 77,914 | 37.44 | 9,345 | 0.35 | 5.30 | ContractSUB | Rail |
| 2026-07EIA row 12141 · preliminary | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 59,984 | 68.40 | 9,288 | 0.35 | 5.40 | ContractSUB | Rail |
| 2026-06EIA row 9745 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 93,539 | 44.74 | 9,275 | 0.32 | 5.20 | ContractSUB | Rail |
| 2026-06EIA row 10231 · preliminary | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 45,390 | 66.84 | 9,275 | 0.34 | 4.90 | ContractSUB | Rail |
| 2026-05EIA row 7928 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 141,222 | 44.19 | 9,260 | 0.34 | 5.50 | ContractSUB | Rail |
| 2026-05EIA row 8372 · preliminary | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 44,974 | 65.70 | 9,346 | 0.35 | 4.70 | ContractSUB | Rail |
| 2026-04EIA row 6097 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 94,000 | 42.55 | 9,290 | 0.27 | 4.40 | ContractSUB | Rail |
| 2026-04EIA row 6572 · preliminary | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 44,874 | 63.07 | 9,327 | 0.37 | 4.70 | ContractSUB | Rail |
| 2026-03EIA row 4287 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 124,964 | 41.92 | 9,270 | 0.33 | 4.80 | ContractSUB | Rail |
| 2026-02EIA row 2322 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 156,059 | 42.05 | 9,295 | 0.37 | 5.10 | ContractSUB | Rail |
| 2026-01EIA row 328 · preliminary | Clay Boswell1893 · MN · SPRING CREEK | 107,078 | 42.90 | 9,335 | 0.33 | 5.10 | ContractSUB | Rail |
| 2026-01EIA row 838 · preliminary | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 57,772 | 52.81 | 9,330 | 0.34 | 5.10 | ContractSUB | Rail |
| 2025-12EIA row 34168 · final | Clay Boswell1893 · MN · SPRING CREEK | 124,451 | 40.48 | 9,275 | 0.33 | 5.00 | ContractSUB | Rail |
| 2025-12EIA row 34869 · final | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 59,403 | 59.66 | 9,357 | 0.33 | 4.70 | ContractSUB | Rail |
| 2025-11EIA row 31187 · final | Clay Boswell1893 · MN · SPRING CREEK | 141,265 | 40.54 | 9,310 | 0.29 | 4.70 | ContractSUB | Rail |
| 2025-11EIA row 31673 · final | Transalta Centralia Generation3845 · WA · NAVAJO TRANSITIONAL ENERGY | 78,747 | —Not published | 8,870 | 0.28 | 9.10 | ContractSUB | Rail / Tram/conveyor |
| 2025-11EIA row 31877 · final | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 60,002 | 59.67 | 9,315 | 0.37 | 5.50 | ContractSUB | Rail |
| 2025-10EIA row 28224 · final | Clay Boswell1893 · MN · SPRING CREEK | 78,482 | 40.46 | 9,435 | 0.27 | 4.60 | ContractSUB | Rail |
| 2025-10EIA row 28719 · final | Transalta Centralia Generation3845 · WA · NAVAJO TRANSITIONAL ENERGY | 79,106 | —Not published | 8,895 | 0.30 | 9.00 | ContractSUB | Rail / Tram/conveyor |
| 2025-10EIA row 28932 · final | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 59,611 | 59.60 | 9,252 | 0.37 | 5.50 | ContractSUB | Rail |
| 2025-10EIA row 29598 · final | DTE-BRSC Shared Storage8841 · MI · NAVAJO TRANSITIONAL ENERGY CO., LLC | 31,483 | 43.39 | 9,553 | 0.26 | 4.10 | ContractSUB | Rail / Great Lakes |
| 2025-09EIA row 25156 · final | Clay Boswell1893 · MN · SPRING CREEK | 94,428 | 40.56 | 9,485 | 0.29 | 4.60 | ContractSUB | Rail |
| 2025-09EIA row 25651 · final | Transalta Centralia Generation3845 · WA · NAVAJO TRANSITIONAL ENERGY | 94,951 | —Not published | 8,915 | 0.33 | 9.30 | ContractSUB | Rail / Tram/conveyor |
| 2025-09EIA row 25867 · final | Coronado6177 · AZ · NAVAJO TRANSITIONAL ENERGY CO., LLC | 59,651 | 59.69 | 9,486 | 0.35 | 4.80 | ContractSUB | Rail |
| 2025-09EIA row 26474 · final | North Valmy8224 · NV · NAVAJO TRANSITIONAL ENERGY CO., LLC | 20,934 | 108.79 | 9,540 | 0.33 | 4.40 | New contractBIT | 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. 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 / county | Annual production · tons | County FOB · USD/ton | Est. sales · tons | Est. coal revenue · USD | Basis / availability |
|---|---|---|---|---|---|
| Spring Creek Mine2401457 · Big Horn, Montana | 13,053,955 | — | — | — | County sales or price not published2 eligible mines / 2 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.
OWNERSHIP
Operator and controller history
Current ownership comes from MSHA Mines. Historical start and end dates come from MSHA Controller and Operator History.
—
Navajo NationcontrolsNavajo Transitional Energy Company, LLCoperatesSpring Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401457—
Navajo Transitional Energy Company LLCcontrolsNavajo Transitional Energy Company, LLCoperatesSpring Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401457—
Cloud Peak Energy Resources LLCcontrolsSpring Creek Coal LLCoperatesSpring Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401457—
RTZ-CRA GroupcontrolsSpring Creek Coal LLCoperatesSpring Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401457—
MidAmerican Energy Holdings CompanycontrolsSpring Creek Coal CompanyoperatesSpring Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2401457Other historical summaries · source-specific periods
RECORD SUMMARY
Production, safety and enforcement
These summaries use the periods stated on each card, independently of the reporting period above.
01 / SAFETYwatch
Accidents and injuries
62 historical accident/injury rows; 2 coded fatalities and 933 lost days across the published record.
ACCIDENT + INJURY RECORD19 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
277 violation rows across the full record; 57 carry an S&S flag and $158,458 appears in current assessed amounts.
ENFORCEMENT ACTIVITY83 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
760 coal dust; 61 coal quartz; 208 noise. 0 personal-sample rows have a published C/E ratio above 1; 18 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
OCCUPATIONAL EXPOSURE1K samples
coal-dust-samplesquartz-samplesnoise-samples04 / PRODUCTIONcontext
Quarterly production and employment
130K employee hours and 259 summed average employees across reported subunits in the latest published quarter.
2026-Q22.4M tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
8 contested-violation rows, 8 civil-penalty docket/decision rows, and 8 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE24 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions06 / CONTRACTORScontext
Contractors
Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
ENTITY-LEVEL CONTEXT25 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
112 inspection events and 7K published inspection hours across the historical record.
OVERSIGHT COVERAGE26 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 61 silica records across the mine’s published history.
Coal quartz concentration
Quarterly mean · µg/m³ · not-voided samples
— No eligible measurements. * Quarter in progress. Means describe the available samples, not average exposure across the mine.
Quartz % is the sample’s quartz content; µg/m³ is its reported concentration. Personal C/E is the ratio to the limit published with that sample. Personal and area concentration units and void status are not specified in those source files.
| Date / sample | Dataset / analyte | Occupation / area | Measurement | Sample status | Published action |
|---|---|---|---|---|---|
| No silica records match these filters. Missing samples do not establish safe conditions. | |||||
Sources and interpretation
- Coal means use numeric concentrations from samples marked not voided, excluding control/invalid sample types and dates after the snapshot. Missing values remain null; reported zeroes remain zero.
- Quarterly means describe available samples, not mine-wide or worker-average exposure. Quarters with no eligible measurements remain empty; the current quarter is partial.
- Personal C/E is MSHA's published concentration-to-limit ratio. A value above 1 is not by itself a citation or a determination under the 2024 silica rule. Personal and area files do not publish a void-status field.
- Area records include bulk-dust analyses and are kept separate from personal exposure results. Their concentration units are not specified in the source dictionary.
- Missing samples do not establish safe conditions. Coal quartz percentage and concentration are separate measures. No compliance threshold is inferred for coal samples.
Coal quartz field definitions ↗Metal/nonmetal personal field definitions ↗Metal/nonmetal area field definitions ↗
EIA + TITLE 30
EIA production and cited regulations
EIA annual figures are reported separately from MSHA. Regulation links use the current eCFR snapshot.
ANNUAL COAL PRODUCTION13,053,955short tons
- LABOR HOURS
- 535,544
- AVG EMPLOYEES
- 265
- SUPPLY REGION
- Powder River Basin
- UNION
- No union code published
- OPERATION
- Mine only
- COMPANY TYPE
- Operating Subsidiary
1 published EIA row aggregated under this MSHA ID. Components remain available in JSON.
30 CFR 77.400Mechanical equipment guards.2 recent rows ↗30 CFR 77.204Openings in surface installations; safeguards.1 recent row ↗30 CFR 77.107-1Plans for training programs.1 recent row ↗30 CFR 77.404Machinery and equipment; operation and maintenance.3 recent rows ↗30 CFR 77.1110Examination and maintenance of firefighting equipment.2 recent rows ↗30 CFR 77.1104Accumulations of combustible materials.1 recent row ↗30 CFR 77.1607Loading and haulage equipment; operation.1 recent row ↗30 CFR 77.505Cable fittings; suitability.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
960709877.400(a)Citation
503357977.204S&S
503357277.107-1Citation
503375277.404(c)S&S
503375177.400(d)Citation
503375077.1110Citation
503374977.1104Citation
503374877.1110Citation
Coal dust, noise and other contaminants. Silica records above ↑
Coal dustHIGHWALL DRILL OPERATOR
.046 mg/m³Not voided
Coal dustREFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE
.045 mg/m³Not voided
Coal dustHIGHLIFT OPERATOR/FRONT END LOADER
.056 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.068 mg/m³Not voided
Coal dustCLEANUP MAN
.207 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.062 mg/m³Not voided
Coal dustHIGHWALL DRILL OPERATOR
.059 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.023 mg/m³Not voided
SOURCE COVERAGE
Reporting dates and coverage
17 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors62Feb 8, 2000—Oct 28, 2025mine-keyed
Addresses of Recordidentity · logistics1Dec 12, 1980—Dec 12, 1980mine-keyed
Assessed Violationscompliance · legal274May 4, 2000—Aug 30, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal8Aug 30, 2007—Jun 1, 2016mine-keyed
Coal Dust Sampleshealth · safety760Jan 14, 2000—Sep 3, 2026mine-keyed
Conferencescompliance · legal8May 9, 2002—Mar 29, 2024mine-keyed
Contested Violationscompliance · legal8Mar 14, 2007—Jan 27, 2015mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety4,561Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety919Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 1, 1979—Oct 25, 2019mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance247Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance62Not published—Not publishedmine-keyed
Inspectionssafety · compliance112Mar 6, 2000—Aug 24, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety—No published rowsabsent / not applicable
Metal and Nonmetal Personal Health Sampleshealth · safety—No published rowsabsent / not applicable
Noise Sampleshealth · safety · equipment208May 11, 2000—Sep 3, 2026mine-keyed
Quartz Samples — Coalhealth · safety61Jun 6, 2001—Nov 14, 2024mine-keyed
Violationscompliance · safety · legal277May 4, 2000—Aug 30, 2026mine-keyed
107(a) Orders Issuedsafety · compliance—No published rowsabsent / not applicable
NOTES
Limitations
- Contractor production is entity-level and is never represented as mine-attributable.
- Missing rows can mean no event, publication delay, identity mismatch, or inapplicability.