# Big Mountain Preparation Plant

- **MSHA mine ID:** 4603143
- **Status:** NonProducing
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Boone, WV
- **Operator:** ERP Environmental Fund Inc.
- **Controller:** Virginia Conservation Legacy Fund (VCLF)
- **Public source rows linked:** 3,015
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Virginia Conservation Legacy Fund (VCLF) (0121101) → ERP Environmental Fund Inc. (0141713) → Big Mountain Preparation Plant (4603143)**

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

## Controller and operator valid-time history

- **Armco Inc → Big Mountain Coals Inc:** 1950-01-01 through 1984-02-26; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.
- **Hanson PLC → Pine Ridge Coal Company:** 1984-02-27 through 1998-05-18; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.
- **Peabody Energy Corporation → Pine Ridge Coal Company LLC:** 1998-05-19 through 2007-10-30; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.
- **Patriot Coal Corporation → Pine Ridge Coal Company LLC:** 2007-10-31 through 2016-01-07; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.
- **Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund Inc.:** 2016-01-08 through 2017-01-25; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.
- **Kissito Healthcare Inc → ERP Environmental Fund Inc.:** 2017-01-26 through 2018-12-31; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.
- **Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund Inc.:** 2019-01-01 through current/open; derived from co-tenure at mine 4603143; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 18
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 40 historical accident/injury rows; 0 coded fatalities and 1,345 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 243 violation rows across the full record; 93 carry an S&S flag and $36,280 appears in current assessed amounts.
3. **HEALTH — 267 samples:** Occupational health samples 207 coal dust; 16 coal quartz; 44 noise. 0 personal-sample rows have a published C/E ratio above 1; 10 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 13K employee hours and 24 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 70 linked rows:** Contests, conferences and decisions 32 contested-violation rows, 32 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
6. **CONTRACTORS — 17 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 — 34 since 2021:** Inspections 212 inspection events and 4K 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 77.410 — 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 77.404 — 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 77.205 — Travelways at surface installations.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.216-3 — Water, sediment, or slurry impoundments and impounding structures; inspection requirements; correction of hazards; program requirements.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216-3
- **30 CFR 77.216-1 — Water, sediment or slurry impoundments and impounding structures; identification.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216-1
- **30 CFR 77.1605 — Loading and haulage equipment; installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **30 CFR 77.216 — Water, sediment, or slurry impoundments and impounding structures; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216

## Source coverage

- **Accident, Injuries, and Illnesses:** 40 rows; 2000-02-19 through 2015-11-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-02-02 through 2012-02-02; source ID `msha-addresses`
- **Assessed Violations:** 236 rows; 2000-04-13 through 2022-06-06; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 32 rows; 2005-09-19 through 2013-02-12; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 207 rows; 2000-01-17 through 2012-01-24; source ID `msha-coal-dust-samples`
- **Conferences:** 6 rows; 2000-05-24 through 2016-12-15; source ID `msha-conferences`
- **Contested Violations:** 32 rows; 2004-11-01 through 2012-02-29; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,548 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 352 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2016-01-08; source ID `msha-controller-operator-history`
- **Inspections:** 212 rows; 2000-01-07 through 2026-09-28; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 14 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 24 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 44 rows; 2000-03-15 through 2011-09-26; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 16 rows; 2001-11-06 through 2011-02-10; source ID `msha-quartz-samples`
- **Violations:** 243 rows; 2000-04-13 through 2022-06-06; 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-mountain-preparation-plant-4603143`
- JSON: `/api/v1/mines/big-mountain-preparation-plant-4603143`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4603143/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4603143/relationships`
- MCP resource: `mine://4603143/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`