# Mountaineer Alma A Mine

- **MSHA mine ID:** 4608730
- **Status:** Temporarily Idled
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Mingo, WV
- **Operator:** Lexington Coal Company, LLC
- **Controller:** Lexington Coal Holdings, Inc
- **Public source rows linked:** 12,292
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Lexington Coal Holdings, Inc (0137221) → Lexington Coal Company, LLC (0154153) → Mountaineer Alma A Mine (4608730)**

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

## Controller and operator valid-time history

- **Ashland Inc et al → Mingo Logan Coal Company:** 1998-08-01 through 1996-06-30; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.
- **Arch Resources Inc → Mingo Logan Coal Company:** 1998-08-01 through 2007-06-29; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Brooks Run South Mining, LLC:** 2007-06-30 through 2016-07-25; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Brooks Run South Mining, LLC:** 2016-07-26 through 2017-10-22; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.
- **Lexington Coal Holdings, Inc → Lexington Coal Company, LLC:** 2017-10-23 through current/open; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.
- **Alpha Metallurgical Resources Inc → Brooks Run South Mining, LLC:** 2018-11-09 through 2017-10-22; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.
- **Core Natural Resources Inc → Mingo Logan Coal Company:** 2025-01-14 through 2007-06-29; derived from co-tenure at mine 4608730; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 17
- Interval anomalies: 3
- 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 291 historical accident/injury rows; 0 coded fatalities and 12,829 lost days across the published record.
2. **COMPLIANCE — 2 since 2021:** Violations and penalties 2,162 violation rows across the full record; 566 carry an S&S flag and $930,290 appears in current assessed amounts.
3. **HEALTH — 4K samples:** Occupational health samples 3,743 coal dust; 278 coal quartz; 149 noise. 0 personal-sample rows have a published C/E ratio above 1; 50 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 — 1,088 linked rows:** Contests, conferences and decisions 504 contested-violation rows, 504 civil-penalty docket/decision rows, and 80 conference records linked by issuance number.
6. **CONTRACTORS — 12 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 — 2 since 2021:** Inspections 197 inspection events and 24K 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 41.12 — Changes; notification by operator.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.12
- **30 CFR 75.1711 — Sealing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1711
- **30 CFR 48.25 — Training of new miners; minimum courses of instruction; hours of instruction.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.25
- **30 CFR 77.1605 — Loading and haulage equipment; installations.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **30 CFR 75.1702-1 — Smoking programs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1702-1
- **30 CFR 75.362 — On-shift examination.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.362
- **30 CFR 75.380 — Escapeways; bituminous and lignite mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.380

## Source coverage

- **Accident, Injuries, and Illnesses:** 291 rows; 2000-01-04 through 2016-08-08; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2018-09-24 through 2018-09-24; source ID `msha-addresses`
- **Assessed Violations:** 2,116 rows; 2000-01-03 through 2024-03-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 504 rows; 2007-08-29 through 2014-12-18; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 3,743 rows; 2000-01-11 through 2014-01-22; source ID `msha-coal-dust-samples`
- **Conferences:** 80 rows; 2004-05-21 through 2018-02-01; source ID `msha-conferences`
- **Contested Violations:** 504 rows; 2006-10-12 through 2013-08-19; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,572 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 333 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1998-08-01 through 2017-10-23; source ID `msha-controller-operator-history`
- **Inspections:** 197 rows; 2000-01-03 through 2026-06-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 309 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 45 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 149 rows; 2000-03-01 through 2013-08-20; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 278 rows; 2000-01-11 through 2013-03-25; source ID `msha-quartz-samples`
- **Violations:** 2,162 rows; 2000-01-03 through 2024-03-27; 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/mountaineer-alma-a-mine-4608730`
- JSON: `/api/v1/mines/mountaineer-alma-a-mine-4608730`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4608730/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4608730/relationships`
- MCP resource: `mine://4608730/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`