# Big Mountain No 16

- **MSHA mine ID:** 4607908
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Boone, WV
- **Operator:** Pine Ridge Coal Company LLC
- **Controller:** Patriot Coal Corporation
- **Public source rows linked:** 11,278
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Patriot Coal Corporation (0071611) → Pine Ridge Coal Company LLC (P24179) → Big Mountain No 16 (4607908)**

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

## Controller and operator valid-time history

- **Hanson PLC → Pine Ridge Coal Company:** 1990-07-01 through 1998-05-18; derived from co-tenure at mine 4607908; source `msha-controller-operator-history`.
- **Peabody Energy Corporation → Pine Ridge Coal Company LLC:** 1998-05-19 through 2007-10-30; derived from co-tenure at mine 4607908; source `msha-controller-operator-history`.
- **Patriot Coal Corporation → Pine Ridge Coal Company LLC:** 2007-10-31 through current/open; derived from co-tenure at mine 4607908; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 340 historical accident/injury rows; 0 coded fatalities and 11,022 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 2,559 violation rows across the full record; 997 carry an S&S flag and $2,692,547 appears in current assessed amounts.
3. **HEALTH — 2K samples:** Occupational health samples 1,928 coal dust; 182 coal quartz; 158 noise. 0 personal-sample rows have a published C/E ratio above 1; 45 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 — 0 tons:** Quarterly production and employment 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1,727 linked rows:** Contests, conferences and decisions 841 contested-violation rows, 846 civil-penalty docket/decision rows, and 40 conference records linked by issuance number.
6. **CONTRACTORS — 11 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 — 0 since 2021:** Inspections 189 inspection events and 20K published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.410 — Mobile equipment; automatic warning devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.410
- **30 CFR 72.520 — Diesel equipment inventory.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-D/section-72.520
- **30 CFR 77.1103 — Flammable liquids; storage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1103
- **30 CFR 75.370 — Mine ventilation plan; submission and approval.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370
- **30 CFR 75.517 — Power wires and cables; insulation and protection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517
- **30 CFR 75.1722 — Mechanical equipment guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1722
- **30 CFR 75.1731 — Maintenance of belt conveyors and belt conveyor entries.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1731
- **30 CFR 75.333 — Ventilation controls.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.333
- **30 CFR 75.1714-4 — Additional self-contained self-rescuers (SCSRs).** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1714-4
- **30 CFR 75.1714-7 — Multi-gas detectors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1714-7

## Source coverage

- **Accident, Injuries, and Illnesses:** 340 rows; 2000-01-07 through 2012-01-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-10-29 through 2014-10-29; source ID `msha-addresses`
- **Assessed Violations:** 2,524 rows; 2000-01-20 through 2014-06-23; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 846 rows; 2003-06-03 through 2013-06-11; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 1,928 rows; 2000-01-20 through 2012-12-29; source ID `msha-coal-dust-samples`
- **Conferences:** 40 rows; 2000-10-05 through 2012-02-27; source ID `msha-conferences`
- **Contested Violations:** 841 rows; 2006-02-08 through 2012-02-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,225 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 244 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1990-07-01 through 1998-05-19; source ID `msha-controller-operator-history`
- **Inspections:** 189 rows; 2000-01-10 through 2014-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 167 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 30 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 158 rows; 2000-01-27 through 2011-10-31; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 182 rows; 2000-01-20 through 2012-01-17; source ID `msha-quartz-samples`
- **Violations:** 2,559 rows; 2000-01-20 through 2014-06-23; 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/big-mountain-no-16-4607908`
- JSON: `/api/v1/mines/big-mountain-no-16-4607908`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4607908/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4607908/relationships`
- MCP resource: `mine://4607908/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`