# Mercer Deep Mine

- **MSHA mine ID:** 4608875
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Webster, WV
- **Operator:** Brooks Run Mining Company LLC
- **Controller:** Pristine Clean Energy LLC
- **Public source rows linked:** 1,280
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Pristine Clean Energy LLC (0137121) → Brooks Run Mining Company LLC (0051081) → Mercer Deep Mine (4608875)**

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

## Controller and operator valid-time history

- **El Paso Energy Corp → Coastal Coal-West Virginia LLC:** 2000-12-01 through 2003-01-31; derived from co-tenure at mine 4608875; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Brooks Run Mining Company LLC:** 2003-02-01 through 2016-07-25; derived from co-tenure at mine 4608875; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Brooks Run Mining Company LLC:** 2016-07-26 through 2017-10-04; derived from co-tenure at mine 4608875; source `msha-controller-operator-history`.
- **Pristine Clean Energy LLC → Brooks Run Mining Company LLC:** 2017-10-05 through current/open; derived from co-tenure at mine 4608875; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 10
- 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 34 historical accident/injury rows; 1 coded fatalities and 561 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 242 violation rows across the full record; 80 carry an S&S flag and $52,154 appears in current assessed amounts.
3. **HEALTH — 270 samples:** Occupational health samples 250 coal dust; 11 coal quartz; 9 noise. 0 personal-sample rows have a published C/E ratio above 1; 4 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 612 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 27 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 7 civil-penalty docket/decision rows, and 13 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 37 inspection events and 3K 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 75.512-2 — Frequency of examinations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.512-2
- **30 CFR 75.1107-4 — Automatic fire sensors and manual actuators; installation; minimum requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1107-4
- **30 CFR 75.604 — Permanent splicing of trailing cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-G/section-75.604
- **30 CFR 75.1100-3 — Condition and examination of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1100-3
- **30 CFR 75.1101-1 — Deluge-type water spray systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1101-1
- **30 CFR 75.807 — Installation of high-voltage transmission cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-I/section-75.807
- **30 CFR 75.333 — Ventilation controls.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.333
- **30 CFR 75.370 — Mine ventilation plan; submission and approval.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370
- **30 CFR 75.364 — Weekly examination.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.364

## Source coverage

- **Accident, Injuries, and Illnesses:** 34 rows; 2003-06-05 through 2007-04-10; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2007-08-24 through 2007-08-24; source ID `msha-addresses`
- **Assessed Violations:** 227 rows; 2003-03-20 through 2007-08-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2005-10-31 through 2008-07-18; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 250 rows; 2003-04-02 through 2007-04-24; source ID `msha-coal-dust-samples`
- **Conferences:** 13 rows; 2004-01-13 through 2007-01-18; source ID `msha-conferences`
- **Contested Violations:** 7 rows; 2004-04-04 through 2007-05-02; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 309 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 40 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2000-12-01 through 2003-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 37 rows; 2003-02-24 through 2007-07-05; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 73 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 15 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 9 rows; 2003-09-10 through 2003-09-10; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 11 rows; 2003-04-16 through 2005-10-18; source ID `msha-quartz-samples`
- **Violations:** 242 rows; 2003-03-20 through 2007-08-07; 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/mercer-deep-mine-4608875`
- JSON: `/api/v1/mines/mercer-deep-mine-4608875`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4608875/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4608875/relationships`
- MCP resource: `mine://4608875/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`