# Black Pearl Underground Mine

- **MSHA mine ID:** 4609289
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Nicholas, WV
- **Operator:** Atlantic Leaseco, LLC
- **Controller:** Walter Energy Incorporated
- **Public source rows linked:** 684
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Walter Energy Incorporated (C00992) → Atlantic Leaseco, LLC (0060725) → Black Pearl Underground Mine (4609289)**

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

## Controller and operator valid-time history

- **Cambrian Mining PLC → Atlantic Leaseco, LLC:** 2008-06-26 through 2011-03-31; derived from co-tenure at mine 4609289; source `msha-controller-operator-history`.
- **Walter Energy Incorporated → Atlantic Leaseco, LLC:** 2011-04-01 through current/open; derived from co-tenure at mine 4609289; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 8 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 202 violation rows across the full record; 52 carry an S&S flag and $185,772 appears in current assessed amounts.
3. **HEALTH — 114 samples:** Occupational health samples 93 coal dust; 9 coal quartz; 12 noise. 0 personal-sample rows have a published C/E ratio above 1; 9 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 — 98 linked rows:** Contests, conferences and decisions 49 contested-violation rows, 49 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 26 inspection events and 2K 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 77.1605 — Loading and haulage equipment; installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **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 75.1504 — Mine emergency evacuation training and drills.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-P/section-75.1504
- **30 CFR 75.1202-1 — Temporary notations, revisions, and supplements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-M/section-75.1202-1
- **30 CFR 75.900 — Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-J/section-75.900
- **30 CFR 48.26 — Experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.26
- **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 75.1100-3 — 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 75.312 — Main mine fan examinations and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.312
- **30 CFR 75.360 — Preshift examination at fixed intervals.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.360
- **30 CFR 75.388 — Boreholes in advance of mining.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.388

## Source coverage

- **Accident, Injuries, and Illnesses:** 8 rows; 2009-10-12 through 2011-08-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-09-06 through 2012-09-06; source ID `msha-addresses`
- **Assessed Violations:** 199 rows; 2009-02-11 through 2011-12-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 49 rows; 2012-05-17 through 2015-02-06; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 93 rows; 2009-08-17 through 2011-04-29; source ID `msha-coal-dust-samples`
- **Contested Violations:** 49 rows; 2010-03-24 through 2011-05-19; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 2008-06-26 through 2008-06-26; source ID `msha-controller-operator-history`
- **Inspections:** 26 rows; 2008-11-11 through 2012-05-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 25 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 8 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 12 rows; 2009-09-15 through 2009-12-02; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 9 rows; 2009-11-20 through 2010-10-12; source ID `msha-quartz-samples`
- **Violations:** 202 rows; 2009-02-11 through 2011-12-08; 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/black-pearl-underground-mine-4609289`
- JSON: `/api/v1/mines/black-pearl-underground-mine-4609289`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4609289/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4609289/relationships`
- MCP resource: `mine://4609289/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`