# PREP PLANT

- **MSHA mine ID:** 4607950
- **Status:** NonProducing
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Mingo, WV
- **Operator:** LEXINGTON COAL COMPANY, LLC
- **Controller:** Lexington Coal Holdings, Inc
- **Public source rows linked:** 414
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Lexington Coal Holdings, Inc (0137221) → LEXINGTON COAL COMPANY, LLC (0154153) → PREP PLANT (4607950)**

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

## Controller and operator valid-time history

- **Shell Oil Company → Kermit Coal Company:** 1990-10-01 through 1992-11-23; derived from co-tenure at mine 4607950; source `msha-controller-operator-history`.
- **Zeigler Coal Holding Company → Kermit Coal Company:** 1992-11-24 through 2005-06-29; derived from co-tenure at mine 4607950; source `msha-controller-operator-history`.
- **Massey Energy Company → Greyeagle Coal Company:** 2005-06-30 through 2011-05-31; derived from co-tenure at mine 4607950; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Greyeagle Coal Company:** 2011-06-01 through 2016-07-25; derived from co-tenure at mine 4607950; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Greyeagle Coal Company:** 2016-07-26 through 2017-10-22; derived from co-tenure at mine 4607950; 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 4607950; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 16
- 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 1 historical accident/injury rows; 0 coded fatalities and 12 lost days across the published record.
2. **COMPLIANCE — 3 since 2021:** Violations and penalties 17 violation rows across the full record; 7 carry an S&S flag and $2,161 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 0 personal-sample rows have a published C/E ratio above 1; 0 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 — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 36 since 2021:** Inspections 120 inspection events and 970 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 77.216 — Water, sediment, or slurry impoundments and impounding structures; general.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216
- **30 CFR 77.1713 — Daily inspection of surface coal mine; certified person; reports of inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1713
- **30 CFR 77.1109 — Quantity and location of firefighting equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1109
- **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 77.404 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.507 — Electric equipment; switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.507
- **30 CFR 77.1700 — Communications in work areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1700

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2011-10-04 through 2011-10-04; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2003-12-01 through 2003-12-01; source ID `msha-addresses`
- **Assessed Violations:** 15 rows; 2000-10-20 through 2026-07-22; source ID `msha-assessed-violations`
- **Contractor Employment and Production — Quarterly:** 132 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 25 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1990-10-01 through 2017-10-23; source ID `msha-controller-operator-history`
- **Inspections:** 120 rows; 2000-01-20 through 2026-07-22; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 88 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`
- **Violations:** 17 rows; 2000-10-20 through 2026-07-29; 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/prep-plant-4607950`
- JSON: `/api/v1/mines/prep-plant-4607950`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4607950/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4607950/relationships`
- MCP resource: `mine://4607950/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`