# Big Run Mine

- **MSHA mine ID:** 1518552
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Ohio, KY
- **Operator:** Armstrong Coal Company Inc
- **Controller:** Armstrong Energy Inc
- **Public source rows linked:** 8,989
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Armstrong Energy Inc (0066691) → Armstrong Coal Company Inc (0079344) → Big Run Mine (1518552)**

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

## Controller and operator valid-time history

- **Peabody Energy Corporation → Ohio County Coal Company:** 2002-06-17 through 2007-03-31; derived from co-tenure at mine 1518552; source `msha-controller-operator-history`.
- **Armstrong Energy Inc → Armstrong Coal Company Inc:** 2007-04-01 through current/open; derived from co-tenure at mine 1518552; 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 121 historical accident/injury rows; 0 coded fatalities and 1,485 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 1,922 violation rows across the full record; 527 carry an S&S flag and $888,295 appears in current assessed amounts.
3. **HEALTH — 2K samples:** Occupational health samples 1,383 coal dust; 120 coal quartz; 185 noise. 0 personal-sample rows have a published C/E ratio above 1; 18 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 — 37K tons:** Quarterly production and employment 17K employee hours and 35 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2,054 linked rows:** Contests, conferences and decisions 765 contested-violation rows, 768 civil-penalty docket/decision rows, and 521 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 164 inspection events and 13K 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 48.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-A/section-48.9
- **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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **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 75.333 — 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 75.606 — Protection of trailing cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-G/section-75.606
- **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 75.517 — 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 75.701 — Grounding metallic frames, casings, and other enclosures of electric equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-H/section-75.701
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 121 rows; 2002-09-13 through 2011-09-27; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-12-30 through 2011-12-30; source ID `msha-addresses`
- **Assessed Violations:** 1,881 rows; 2002-07-22 through 2011-10-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 768 rows; 2004-01-05 through 2014-03-07; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 1,383 rows; 2002-09-11 through 2011-09-26; source ID `msha-coal-dust-samples`
- **Conferences:** 521 rows; 2003-06-12 through 2014-03-07; source ID `msha-conferences`
- **Contested Violations:** 765 rows; 2003-06-23 through 2011-10-05; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 815 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 188 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2002-06-17 through 2007-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 164 rows; 2002-06-18 through 2011-10-03; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 125 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 27 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 185 rows; 2002-09-12 through 2011-09-06; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 120 rows; 2002-09-11 through 2011-07-06; source ID `msha-quartz-samples`
- **Violations:** 1,922 rows; 2002-07-22 through 2011-10-17; 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/big-run-mine-1518552`
- JSON: `/api/v1/mines/big-run-mine-1518552`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1518552/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1518552/relationships`
- MCP resource: `mine://1518552/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`