# No 4 Mine

- **MSHA mine ID:** 0101247
- **Status:** Active
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Tuscaloosa, AL
- **Operator:** Warrior Met Coal Mining, LLC
- **Controller:** Warrior Met Coal Intermediate Holdco LLC
- **Public source rows linked:** 63,572
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Warrior Met Coal Intermediate Holdco LLC (0124421) → Warrior Met Coal Mining, LLC (0144515) → No 4 Mine (0101247)**

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

## Controller and operator valid-time history

- **Walter Energy Incorporated → Jim Walter Resources Inc:** 1974-01-01 through 2016-03-30; derived from co-tenure at mine 0101247; source `msha-controller-operator-history`.
- **Warrior Met Coal Intermediate Holdco LLC → Warrior Met Coal Mining, LLC:** 2016-03-31 through current/open; derived from co-tenure at mine 0101247; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 — 61 since 2021:** Accidents and injuries 826 historical accident/injury rows; 3 coded fatalities and 29,732 lost days across the published record.
2. **COMPLIANCE — 2,945 since 2021:** Violations and penalties 10,136 violation rows across the full record; 3,046 carry an S&S flag and $7,871,800 appears in current assessed amounts.
3. **HEALTH — 22K samples:** Occupational health samples 20,172 coal dust; 1,034 coal quartz; 1,209 noise. 0 personal-sample rows have a published C/E ratio above 1; 460 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 — 817K tons:** Quarterly production and employment 269K employee hours and 393 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8,253 linked rows:** Contests, conferences and decisions 3,722 contested-violation rows, 4,032 civil-penalty docket/decision rows, and 499 conference records linked by issuance number.
6. **CONTRACTORS — 42 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 — 631 since 2021:** Inspections 3,084 inspection events and 131K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 2,769,238 short tons
- **Labor hours:** 1,170,251
- **Average employees:** 428
- **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 75.503 — Permissible electric face equipment; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **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 75.512 — Electric equipment; examination, testing and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.512
- **30 CFR 75.1403 — Other safeguards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-O/section-75.1403
- **30 CFR 75.202 — Protection from falls of roof, face and ribs.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 75.517 — Power wires and cables; insulation and protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517
- **30 CFR 75.342 — Methane monitors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.342
- **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 75.400 — Accumulation of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **30 CFR 75.1714-3 — Self-rescue devices; inspection, testing, maintenance, repair, and recordkeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1714-3

## Source coverage

- **Accident, Injuries, and Illnesses:** 826 rows; 2000-01-25 through 2026-08-31; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2021-10-26 through 2021-10-26; source ID `msha-addresses`
- **Assessed Violations:** 9,971 rows; 2000-01-06 through 2026-09-13; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4,032 rows; 2000-10-17 through 2026-06-16; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 20,172 rows; 2000-01-05 through 2026-10-14; source ID `msha-coal-dust-samples`
- **Conferences:** 499 rows; 2000-03-14 through 2026-04-16; source ID `msha-conferences`
- **Contested Violations:** 3,722 rows; 2002-02-04 through 2026-06-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 6,865 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,487 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1974-01-01 through 2016-03-31; source ID `msha-controller-operator-history`
- **Inspections:** 3,084 rows; 2000-01-06 through 2026-10-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 423 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 108 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 1,209 rows; 2000-01-12 through 2026-06-24; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 1,034 rows; 2000-01-12 through 2026-09-09; source ID `msha-quartz-samples`
- **Violations:** 10,136 rows; 2000-01-06 through 2026-10-14; 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/no-4-mine-0101247`
- JSON: `/api/v1/mines/no-4-mine-0101247`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0101247/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0101247/relationships`
- MCP resource: `mine://0101247/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`