# North Antelope Rochelle Mine

- **MSHA mine ID:** 4801353
- **Status:** Active
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Campbell, WY
- **Operator:** Peabody Powder River Mining LLC
- **Controller:** Peabody Energy Corporation
- **Public source rows linked:** 28,391
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Peabody Energy Corporation (C15833) → Peabody Powder River Mining LLC (P24171) → North Antelope Rochelle Mine (4801353)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **Hanson PLC → Powder River Coal Company:** 1981-06-01 through 1998-05-18; derived from co-tenure at mine 4801353; source `msha-controller-operator-history`.
- **Peabody Energy Corporation → Peabody Powder River Mining LLC:** 1998-05-19 through current/open; derived from co-tenure at mine 4801353; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- Interval anomalies: 0
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 125 since 2021:** Accidents and injuries 658 historical accident/injury rows; 3 coded fatalities and 11,940 lost days across the published record.
2. **COMPLIANCE — 717 since 2021:** Violations and penalties 1,803 violation rows across the full record; 330 carry an S&S flag and $1,449,372 appears in current assessed amounts.
3. **HEALTH — 2K samples:** Occupational health samples 1,708 coal dust; 214 coal quartz; 305 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.
4. **PRODUCTION — 19.1M tons:** Quarterly production and employment 400K employee hours and 803 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 352 linked rows:** Contests, conferences and decisions 160 contested-violation rows, 161 civil-penalty docket/decision rows, and 31 conference records linked by issuance number.
6. **CONTRACTORS — 103 linked entities:** 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.
7. **INSPECTIONS — 74 since 2021:** Inspections 336 inspection events and 32K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 59,793,304 short tons
- **Labor hours:** 2,347,233
- **Average employees:** 1,127
- **Coal supply region:** Powder River Basin
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.400 — Mechanical equipment guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400
- **30 CFR 77.1607 — Loading and haulage equipment; operation.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1607
- **30 CFR 77.505 — Cable fittings; suitability.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.505
- **30 CFR 77.906 — Trailing cables supplying power to low-voltage mobile equipment; ground wires and ground check wires.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-J/section-77.906
- **30 CFR 77.206 — Ladders; construction; installation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.206
- **30 CFR 77.205 — Travelways at surface installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404

## Source coverage

- **Accident, Injuries, and Illnesses:** 658 rows; 2000-01-26 through 2026-08-28; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1985-12-01 through 1985-12-01; source ID `msha-addresses`
- **Assessed Violations:** 1,762 rows; 2000-01-19 through 2026-09-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 161 rows; 2002-06-10 through 2026-09-02; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 1,708 rows; 2000-01-13 through 2026-09-18; source ID `msha-coal-dust-samples`
- **Conferences:** 31 rows; 2001-02-20 through 2026-07-13; source ID `msha-conferences`
- **Contested Violations:** 160 rows; 2004-06-03 through 2026-07-20; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 17,500 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 3,632 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1981-06-01 through 1998-05-19; source ID `msha-controller-operator-history`
- **Inspections:** 336 rows; 2000-01-03 through 2026-08-25; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 305 rows; 2000-02-01 through 2026-06-16; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 214 rows; 2000-02-07 through 2026-08-13; source ID `msha-quartz-samples`
- **Violations:** 1,803 rows; 2000-01-19 through 2026-09-02; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/north-antelope-rochelle-mine-4801353`
- JSON: `/api/v1/mines/north-antelope-rochelle-mine-4801353`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4801353/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4801353/relationships`
- MCP resource: `mine://4801353/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`