# Oak Grove Mine

- **MSHA mine ID:** 0100851
- **Status:** Active
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Jefferson, AL
- **Operator:** Crimson Oak Grove Resources LLC
- **Controller:** Alabama Kanu Holdings LLC
- **Public source rows linked:** 81,785
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Alabama Kanu Holdings LLC (0186824) → Crimson Oak Grove Resources LLC (0174313) → Oak Grove Mine (0100851)**

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

## Controller and operator valid-time history

- **Usx Corp → U.S. Steel Mining Company, LLC:** 1950-01-01 through 2003-06-30; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **Benjamin M  Statler et al → Oak Grove Resources LLC:** 2003-07-01 through 2007-07-30; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **Questor Management Company LLC  et al → Oak Grove Resources LLC:** 2003-07-01 through 2007-07-30; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **Cleveland-Cliffs Inc → Oak Grove Resources LLC:** 2007-07-31 through 2015-12-21; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **Virginia Conservation Legacy Fund (VCLF) → Oak Grove Resources LLC:** 2015-12-22 through 2016-11-17; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **ERP Compliant Fuels, LLC → Oak Grove Resources LLC:** 2016-11-18 through 2019-04-29; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **Robert E  Murray → Murray Oak Grove Coal LLC:** 2019-04-30 through 2020-09-16; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **ACNR Holdings, Inc → Crimson Oak Grove Resources LLC:** 2020-09-17 through 2024-08-06; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.
- **Alabama Kanu Holdings LLC → Crimson Oak Grove Resources LLC:** 2024-08-07 through current/open; derived from co-tenure at mine 0100851; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 21
- 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 — 375 since 2021:** Accidents and injuries 1,030 historical accident/injury rows; 4 coded fatalities and 36,610 lost days across the published record.
2. **COMPLIANCE — 3,920 since 2021:** Violations and penalties 13,226 violation rows across the full record; 4,351 carry an S&S flag and $12,280,108 appears in current assessed amounts.
3. **HEALTH — 34K samples:** Occupational health samples 31,653 coal dust; 1,147 coal quartz; 1,315 noise. 0 personal-sample rows have a published C/E ratio above 1; 436 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 — 552K tons:** Quarterly production and employment 278K employee hours and 495 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8,780 linked rows:** Contests, conferences and decisions 4,031 contested-violation rows, 4,096 civil-penalty docket/decision rows, and 653 conference records linked by issuance number.
6. **CONTRACTORS — 40 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 — 1,041 since 2021:** Inspections 3,545 inspection events and 136K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 2,806,000 short tons
- **Labor hours:** 1,242,668
- **Average employees:** 490
- **Coal supply region:** Appalachia Southern
- **Union code:** United Mine Workers Of America
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 75.400 — Accumulation of combustible materials.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **30 CFR 75.380 — Escapeways; bituminous and lignite mines.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.380
- **30 CFR 75.511 — Low-, medium-, or high-voltage distribution circuits and equipment; repair.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.511
- **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 75.202 — Protection from falls of roof, face and ribs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1,030 rows; 2000-01-12 through 2026-09-15; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-02-19 through 2020-02-19; source ID `msha-addresses`
- **Assessed Violations:** 12,924 rows; 2000-01-06 through 2026-08-28; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4,096 rows; 2001-01-10 through 2026-09-02; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 31,653 rows; 2000-01-05 through 2026-10-07; source ID `msha-coal-dust-samples`
- **Conferences:** 653 rows; 2000-03-14 through 2026-05-28; source ID `msha-conferences`
- **Contested Violations:** 4,031 rows; 2003-10-21 through 2026-07-30; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 6,401 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,354 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1950-01-01 through 2020-09-17; source ID `msha-controller-operator-history`
- **Inspections:** 3,545 rows; 2000-01-04 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 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:** 1,315 rows; 2000-02-02 through 2026-05-13; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 1,147 rows; 2000-01-18 through 2026-09-24; source ID `msha-quartz-samples`
- **Violations:** 13,226 rows; 2000-01-06 through 2026-10-08; 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/oak-grove-mine-0100851`
- JSON: `/api/v1/mines/oak-grove-mine-0100851`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0100851/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0100851/relationships`
- MCP resource: `mine://0100851/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`