# Chesterfield Prep Plant

- **MSHA mine ID:** 4603141
- **Status:** Abandoned
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Boone, WV
- **Operator:** Lexington Coal Company, LLC
- **Controller:** Lexington Coal Holdings, Inc
- **Public source rows linked:** 3,886
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Lexington Coal Holdings, Inc (0137221) → Lexington Coal Company, LLC (0154153) → Chesterfield Prep Plant (4603141)**

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

## Controller and operator valid-time history

- **Massey Energy Company → Omar Mining Company:** 1950-01-01 through 1987-09-30; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **CLI International Enterprises Corp → Central Continental Operating Company Inc:** 1987-10-01 through 1989-07-31; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **Michael  McClure → M I M Company Inc:** 1989-08-01 through 1991-05-07; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **Massey Energy Company → Omar Mining Company:** 1991-05-08 through 2011-05-31; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Omar Mining Company:** 2011-06-01 through 1987-09-30; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Omar Mining Company:** 2011-06-01 through 2016-07-25; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Omar Mining Company:** 2016-07-26 through 1987-09-30; derived from co-tenure at mine 4603141; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Omar Mining Company:** 2016-07-26 through 2017-10-22; derived from co-tenure at mine 4603141; 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 4603141; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 20
- Interval anomalies: 2
- 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 31 historical accident/injury rows; 0 coded fatalities and 2,918 lost days across the published record.
2. **COMPLIANCE — 1 since 2021:** Violations and penalties 336 violation rows across the full record; 205 carry an S&S flag and $104,598 appears in current assessed amounts.
3. **HEALTH — 160 samples:** Occupational health samples 118 coal dust; 6 coal quartz; 36 noise. 0 personal-sample rows have a published C/E ratio above 1; 7 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 — 94 linked rows:** Contests, conferences and decisions 42 contested-violation rows, 42 civil-penalty docket/decision rows, and 10 conference records linked by issuance number.
6. **CONTRACTORS — 19 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 — 6 since 2021:** Inspections 151 inspection events and 3K 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 77.215 — Refuse piles; construction requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.215
- **30 CFR 77.200 — Surface installations; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.200
- **30 CFR 48.26 — Experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.26
- **30 CFR 77.410 — Mobile equipment; automatic warning devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.410
- **30 CFR 77.208 — Storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.208
- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **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 77.1109 — Quantity and location of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1109

## Source coverage

- **Accident, Injuries, and Illnesses:** 31 rows; 2000-02-18 through 2015-08-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2024-04-13 through 2024-04-13; source ID `msha-addresses`
- **Assessed Violations:** 330 rows; 2000-02-10 through 2023-04-20; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 42 rows; 2004-10-27 through 2012-03-07; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 118 rows; 2000-09-21 through 2013-04-10; source ID `msha-coal-dust-samples`
- **Conferences:** 10 rows; 2001-10-25 through 2007-02-23; source ID `msha-conferences`
- **Contested Violations:** 42 rows; 2003-10-14 through 2010-10-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,230 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 374 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1950-01-01 through 2017-10-23; source ID `msha-controller-operator-history`
- **Inspections:** 151 rows; 2000-01-13 through 2023-12-18; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 150 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 19 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 36 rows; 2001-10-26 through 2012-11-06; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 6 rows; 2000-09-21 through 2004-04-05; source ID `msha-quartz-samples`
- **Violations:** 336 rows; 2000-02-10 through 2023-04-20; 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/chesterfield-prep-plant-4603141`
- JSON: `/api/v1/mines/chesterfield-prep-plant-4603141`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4603141/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4603141/relationships`
- MCP resource: `mine://4603141/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`