# Prep Plant #1

- **MSHA mine ID:** 4406746
- **Status:** Temporarily Idled
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Wise, VA
- **Operator:** Maven Energy, LLC
- **Controller:** Darrell  Grigsby
- **Public source rows linked:** 3,292
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Darrell  Grigsby (C13088) → Maven Energy, LLC (0146513) → Prep Plant #1 (4406746)**

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

## Controller and operator valid-time history

- **Thomas V  Cooper → Andover Enterprises Inc:** 1993-08-01 through 2000-08-01; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **Paul R  Ison  et al → Ambrose Branch Coal Company Inc:** 2000-08-02 through 2006-07-12; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **Jessica B  Ison  et al → Ambrose Branch Coal Company Inc:** 2000-08-02 through 2006-07-12; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **Jerry W  Wharton → A & G Coal Corporation:** 2006-07-13 through 2009-04-29; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **James C  Justice II et al → A & G Coal Corporation:** 2009-04-30 through 2016-07-26; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **Darrell  Grigsby → Maven Energy, LLC:** 2016-07-27 through current/open; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **Jillean L  Justice et al → A & G Coal Corporation:** 2017-03-27 through 2016-07-26; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **James C  Justice lll et al → A & G Coal Corporation:** 2017-03-27 through 2016-07-26; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.
- **James C  Justice III → A & G Coal Corporation:** 2022-10-03 through 2016-07-26; derived from co-tenure at mine 4406746; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 20
- Interval anomalies: 3
- 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 28 historical accident/injury rows; 0 coded fatalities and 1,220 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 387 violation rows across the full record; 172 carry an S&S flag and $117,630 appears in current assessed amounts.
3. **HEALTH — 226 samples:** Occupational health samples 138 coal dust; 16 coal quartz; 72 noise. 0 personal-sample rows have a published C/E ratio above 1; 15 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 240 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 128 linked rows:** Contests, conferences and decisions 61 contested-violation rows, 61 civil-penalty docket/decision rows, and 6 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 — 5 since 2021:** Inspections 90 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 75.1712-4 — Waiver of surface facilities requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1712-4
- **30 CFR 77.1607 — Loading and haulage equipment; operation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1607
- **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 77.205 — Travelways at surface installations.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 71.600 — Drinking water; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-G/section-71.600
- **30 CFR 71.500 — Sanitary toilet facilities at surface work sites; installation requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-F/section-71.500
- **30 CFR 71.400 — Bathing facilities; change rooms; sanitary flush toilet facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-E/section-71.400
- **30 CFR 77.516 — Electric wiring and equipment; installation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.516
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 28 rows; 2000-04-14 through 2011-06-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-05-27 through 2020-05-27; source ID `msha-addresses`
- **Assessed Violations:** 372 rows; 2000-03-18 through 2019-07-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 61 rows; 2009-11-19 through 2018-03-19; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 138 rows; 2000-03-09 through 2019-06-27; source ID `msha-coal-dust-samples`
- **Conferences:** 6 rows; 2007-07-18 through 2010-09-15; source ID `msha-conferences`
- **Contested Violations:** 61 rows; 2007-09-13 through 2017-07-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,577 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 314 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1993-08-01 through 2016-07-27; source ID `msha-controller-operator-history`
- **Inspections:** 90 rows; 2000-03-18 through 2026-07-21; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 137 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 22 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 72 rows; 2000-04-07 through 2019-06-27; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 16 rows; 2000-10-19 through 2018-02-05; source ID `msha-quartz-samples`
- **Violations:** 387 rows; 2000-03-18 through 2019-07-08; 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-1-4406746`
- JSON: `/api/v1/mines/prep-plant-1-4406746`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4406746/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4406746/relationships`
- MCP resource: `mine://4406746/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`