MINE DETAILS
Cordero Rojo Mine
MSHA MINE ID4800992
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Cordero Rojo Mine44.09611, -105.03917Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.
Coal production
17,489,885reported short tons
Hours worked
811,792reported employee hours
Tons per hour
21.54production ÷ 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 | 2,761,665 | 121,174 | 22.79 | 249 | 1/1 mines reporting |
| 2025 Q2 | 3,161,870 | 129,618 | 24.39 | 273 | 1/1 mines reporting |
| 2025 Q3 | 2,779,052 | 136,181 | 20.41 | 283 | 1/1 mines reporting |
| 2025 Q4 | 3,311,218 | 136,127 | 24.32 | 290 | 1/1 mines reporting |
| 2026 Q1 | 2,840,162 | 141,145 | 20.12 | 291 | 1/1 mines reporting |
| 2026 Q2 | 2,635,918 | 147,547 | 17.86 | 300 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
3611 significant & substantial (S&S)
Accident records
40 records classified as fatality
Proposed penalties · USD
34,299.0035 of 36 violations with amounts
On-site inspection hours
427.258 inspections · 8 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 | 11 | 3 | 7,348.00 | 0 | 0 | 1 | 91.5 |
| 2025-Q2 | 11 | 4 | 7,783.00 | 0 | 0 | 1 | 90.0 |
| 2025-Q3 | 0 | 0 | — | 0 | 0 | 1 | 12.8 |
| 2025-Q4 | 3 | 1 | 386.00 | 2 | 0 | 1 | 105.3 |
| 2026-Q1 | 8 | 3 | 18,245.00 | 0 | 0 | 2 | 21.8 |
| 2026-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q3 | 3 | 0 | 537.00 | 2 | 0 | 2 | 106.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Verbal Hazard Complaint Inspections · 3.5 on-site hours
MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While pulling the top cover of the conveyor belt off for vulcanizing, the Dynema rope pulling the ply puller with a winch failed. The clamp backlashed hitting the worker in the left hand. While trying to get out of the way, the worker fell landing on EE's right hand. Injuries include fracture to L 5th Metatarsal and R wrist.
77.502 · $193.00 proposed
77.502 · $151.00 proposed
MACHINERY · DAYS AWAY FROM WORK ONLY
Accident narrative
Shovel operator was attempting to move a trip rope that was hung up on the latch bar on the shovel dipper. While they were moving the rope the latch bar shiv fell down pulling their hand into the bottom side of the shiv, pinching their hand between the shiv and the frame of the dipper. The employee was diagnosed with a fracture to their pinky finger on their right hand.
77.216(d) · $193.00 proposed
Regular Safety and Health Inspection · 102.5 on-site hours
77.1713(c) · $177.00 proposed
77.1607(b) · S&S · $1,431.00 proposed
77.1001 · S&S · $7,084.00 proposed
50.12 · $177.00 proposed
77.1607(b) · S&S · $1,431.00 proposed
Non-Fatal Accident Investigation · 9.8 on-site hours
50.10(b) · $7,555.00 proposed
77.1104 · $193.00 proposed
Description not reported · $197.00 proposed
Verbal Hazard Complaint Inspections · 12.0 on-site hours
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
It is believed the employee fell on clay chunks in the pit. The fall caused injuries that resulted in lost workdays. What exactly caused the fall, and the full extent of the injuries are yet to be determined.
HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
Employee was trying to loosen a fitting on a brake accumulator. When fitting broke loose, employee's hand contacted the work bench, and the finger was lacerated by the wrench on the inside of EE's finger. Employee was wearing gloves. Laceration required 3 stitches.
47.44(b) · $193.00 proposed
77.516 · $193.00 proposed
77.404(a) · S&S
Regular Safety and Health Inspection · 105.3 on-site hours
Compliance Follow-up Inspection · 12.8 on-site hours
77.1713(a) · S&S · $3,184.00 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 * | 1,825,180 | 8,537 | 0.28 | 5.41 | 31.02 | |
| 2025-Q4 | 3,190,544 | 8,522 | 0.31 | 5.55 | 29.08 | |
| 2026-Q1 | 2,678,344 | 8,553 | 0.28 | 5.42 | 33.26 | |
| 2026-Q2 | 2,493,763 | 8,569 | 0.27 | 5.21 | 33.72 | |
| 2026-Q3 * | 672,783 | 8,486 | 0.28 | 5.80 | 36.90 |
| Month / source | Receiving plant / supplier | Short tons | Delivered USD/ton | Heat · Btu/lb | Sulfur % | Ash % | Purchase | Transport |
|---|---|---|---|---|---|---|---|---|
| 2026-07EIA row 11688 · preliminary | North Omaha2291 · NE · NAVAJO TRANSITIONAL ENERGY CO., LLC | 16,834 | 25.76 | 8,250 | 0.28 | 6.80 | ContractSUB | Rail |
| 2026-07EIA row 11902 · preliminary | W A Parish3470 · TX · NAVAJO TRANSITIONAL ENERGY CO., LLC | 77,294 | —Not published | 8,440 | 0.26 | 5.60 | ContractSUB | Rail |
| 2026-07EIA row 11992 · preliminary | James H Miller Jr6002 · AL · NTEC-KENNECOTT | 31,885 | 42.55 | 8,262 | 0.27 | 6.40 | ContractSUB | Rail |
| 2026-07EIA row 12003 · preliminary | Newton6017 · IL · CORDERO | 48,088 | —Not published | 8,800 | 0.26 | 5.60 | ContractSUB | Rail |
| 2026-07EIA row 12060 · preliminary | Jeffrey Energy Center6068 · KS · NAVAJO TRANSITIONAL ENERGY CO., LLC | 44,715 | 29.44 | 8,486 | 0.24 | 5.50 | ContractSUB | Rail |
| 2026-07EIA row 12108 · preliminary | Nebraska City6096 · NE · NAVAJO TRANSITIONAL ENERGY CO., LLC | 85,814 | 22.86 | 8,480 | 0.25 | 5.70 | ContractSUB | Rail |
| 2026-07EIA row 12112 · preliminary | Big Stone6098 · SD · NAVAJO TRIBAL AUTHORITY | 78,496 | 45.38 | 8,527 | 0.30 | 5.60 | ContractSUB | Rail |
| 2026-07EIA row 12203 · preliminary | Scherer6257 · GA · NTEC-KENNECOTT | 15,968 | 57.19 | 8,866 | 0.65 | 6.60 | ContractSUB | Rail |
| 2026-07EIA row 12205 · preliminary | Scherer6257 · GA · NTEC-KENNECOTT | 31,819 | 57.00 | 8,412 | 0.28 | 5.80 | ContractSUB | Rail |
| 2026-07EIA row 12207 · preliminary | Scherer6257 · GA · NTEC-KENNECOTT | 15,731 | 57.14 | 8,579 | 0.30 | 5.50 | ContractSUB | Rail |
| 2026-07EIA row 12210 · preliminary | Scherer6257 · GA · NTEC-KENNECOTT | 16,031 | 56.96 | 8,542 | 0.22 | 5.00 | ContractSUB | Rail |
| 2026-07EIA row 12262 · preliminary | J K Spruce7097 · TX · CLOUD PEAK | 182,539 | 32.09 | 8,435 | 0.27 | 6.00 | ContractSUB | Rail |
| 2026-07EIA row 12439 · preliminary | Columbia (WI)8023 · WI · NAVAJO TRANSITIONAL ENERGY CO., LLC | 27,569 | 42.48 | 8,502 | 0.26 | 5.70 | ContractSUB | Rail |
| 2026-06EIA row 9475 · preliminary | Limestone298 · TX · NAVAJO TRANSITIONAL ENERGY CO., LLC | 15,547 | —Not published | 8,585 | 0.30 | 5.00 | ContractSUB | Rail |
| 2026-06EIA row 9787 · preliminary | North Omaha2291 · NE · NAVAJO TRANSITIONAL ENERGY CO., LLC | 17,542 | 25.49 | 8,610 | 0.31 | 5.00 | ContractSUB | Rail |
| 2026-06EIA row 9788 · preliminary | North Omaha2291 · NE · NAVAJO TRANSITIONAL ENERGY CO., LLC | 17,155 | 25.59 | 8,580 | 0.31 | 5.10 | ContractSUB | Rail |
| 2026-06EIA row 10006 · preliminary | W A Parish3470 · TX · NAVAJO TRANSITIONAL ENERGY CO., LLC | 123,526 | —Not published | 8,565 | 0.29 | 5.30 | ContractSUB | Rail |
| 2026-06EIA row 10086 · preliminary | James H Miller Jr6002 · AL · NTEC-KENNECOTT | 47,761 | 42.46 | 8,571 | 0.29 | 5.30 | ContractSUB | Rail |
| 2026-06EIA row 10098 · preliminary | Newton6017 · IL · CORDERO | 15,712 | —Not published | 8,950 | 0.26 | 6.10 | ContractSUB | Rail |
| 2026-06EIA row 10153 · preliminary | Jeffrey Energy Center6068 · KS · NAVAJO TRANSITIONAL ENERGY CO., LLC | 44,850 | 25.98 | 8,473 | 0.27 | 5.10 | ContractSUB | Rail |
| 2026-06EIA row 10199 · preliminary | Nebraska City6096 · NE · NAVAJO TRANSITIONAL ENERGY CO., LLC | 119,116 | 22.82 | 8,540 | 0.26 | 5.00 | ContractSUB | Rail |
| 2026-06EIA row 10201 · preliminary | Nebraska City6096 · NE · NAVAJO TRANSITIONAL ENERGY CO., LLC | 34,690 | 24.67 | 8,485 | 0.32 | 5.20 | ContractSUB | Rail |
| 2026-06EIA row 10204 · preliminary | Big Stone6098 · SD · NAVAJO TRIBAL AUTHORITY | 78,862 | 44.57 | 8,571 | 0.29 | 5.00 | ContractSUB | Rail |
| 2026-06EIA row 10235 · preliminary | Coleto Creek6178 · TX · CORDERO | 32,252 | —Not published | 8,625 | 0.27 | 4.80 | ContractSUB | Rail |
| 2026-06EIA row 10298 · preliminary | Scherer6257 · GA · NTEC-KENNECOTT | 47,895 | 56.12 | 8,576 | 0.31 | 5.30 | 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 |
|---|---|---|---|---|---|
| Cordero Rojo Mine4800992 · Campbell, Wyoming | 4,314,678 | 13.96 | 4,314,351 | 60,228,340 | County allocation estimate2.54% 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.
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, LLCoperatesCordero Rojo Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800992—
Navajo Transitional Energy Company LLCcontrolsNavajo Transitional Energy Company, LLCoperatesCordero Rojo Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800992—
Cloud Peak Energy Resources LLCcontrolsCordero Mining LLCoperatesCordero Rojo Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800992—
RTZ-CRA GroupcontrolsCordero Mining LLCoperatesCordero Rojo Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800992—
Sunoco, Inc.controlsCordero Mining CompanyoperatesCordero Rojo Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800992Other 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
155 historical accident/injury rows; 0 coded fatalities and 2,374 lost days across the published record.
ACCIDENT + INJURY RECORD17 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
507 violation rows across the full record; 116 carry an S&S flag and $217,358 appears in current assessed amounts.
ENFORCEMENT ACTIVITY94 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
767 coal dust; 36 coal quartz; 212 noise. 0 personal-sample rows have a published C/E ratio above 1; 34 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
148K employee hours and 300 summed average employees across reported subunits in the latest published quarter.
2026-Q22.6M tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
5 contested-violation rows, 5 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE16 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 CONTEXT30 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
152 inspection events and 11K published inspection hours across the historical record.
OVERSIGHT COVERAGE24 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 36 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 |
|---|---|---|---|---|---|
| 58000799 / lab 2026034082 | Coal quartzQuartz | COAL DRILL OPERATORDESIGNATED WORK POSITION | 9 µg/m³2.9% quartz | Not voided | Not reported |
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 PRODUCTION4,314,678short tons
- LABOR HOURS
- 460,384
- AVG EMPLOYEES
- 248
- 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 77.502Electric equipment; examination, testing, and maintenance.2 recent rows ↗30 CFR 77.216Water, sediment, or slurry impoundments and impounding structures; general.1 recent row ↗30 CFR 77.1713Daily inspection of surface coal mine; certified person; reports of inspection.1 recent row ↗30 CFR 77.1607Loading and haulage equipment; operation.2 recent rows ↗30 CFR 77.1001Stripping; loose material.1 recent row ↗30 CFR 50.12Preservation of evidence.1 recent row ↗30 CFR 50.10Immediate notification.1 recent row ↗30 CFR 77.1104Accumulations of combustible materials.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
503379377.502Citation
503379277.502Citation
503379177.216(d)Citation
503374477.1713(c)Citation
503374377.1607(b)S&S
503374277.1001S&S
503374150.12Citation
503392777.1607(b)S&S
Coal dust, noise and other contaminants. Silica records above ↑
Coal dustCOAL DRILL OPERATOR
.315 mg/m³Not voided
Coal dustWASHER OPERATOR
.054 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.077 mg/m³Not voided
Coal dustHIGHLIFT OPERATOR/FRONT END LOADER
.044 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.024 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.034 mg/m³Not voided
Coal dustREFUSE TRUCK DRIVER/BACKFILL TRUCK DRIVE
.044 mg/m³Not voided
Coal dustBULLDOZER OPERATOR
.032 mg/m³Not voided
SOURCE COVERAGE
Reporting dates and coverage
17 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors155Jan 9, 2000—Aug 12, 2026mine-keyed
Addresses of Recordidentity · logistics1May 20, 2016—May 20, 2016mine-keyed
Assessed Violationscompliance · legal497May 24, 2000—Aug 10, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal5Not published—Not publishedmine-keyed
Coal Dust Sampleshealth · safety767Jan 5, 2000—Aug 17, 2026mine-keyed
Conferencescompliance · legal6Apr 14, 2005—Mar 26, 2026mine-keyed
Contested Violationscompliance · legal5Jan 12, 2026—Feb 4, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety5,358Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,154Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Nov 27, 1974—Oct 25, 2019mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance268Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance66Not published—Not publishedmine-keyed
Inspectionssafety · compliance152Jan 4, 2000—Sep 4, 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 · equipment212May 23, 2000—Jan 6, 2026mine-keyed
Quartz Samples — Coalhealth · safety36Jan 5, 2000—Aug 17, 2026mine-keyed
Violationscompliance · safety · legal507May 24, 2000—Aug 10, 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.