# Prep Plant

- **MSHA mine ID:** 1512428
- **Status:** NonProducing
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Harlan, KY
- **Operator:** Double Branch Energy, LLC.
- **Controller:** Douglas  Warriner
- **Public source rows linked:** 4,047
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Douglas  Warriner (0125341) → Double Branch Energy, LLC. (0145213) → Prep Plant (1512428)**

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

## Controller and operator valid-time history

- **James W  Croley → Golden Glow Coals Inc:** 1980-07-01 through 1982-03-31; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **Larry E  Smith et al → N E R Of Kentucky Inc:** 1982-04-01 through 1987-11-12; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **John P  Baugues Sr → Balmont Corp:** 1987-11-13 through 1992-12-13; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **Great Western Resources Inc → Harlan Fuel Company:** 1992-12-14 through 1995-08-14; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **George E  Barker → Harlan Fuel Company:** 1995-08-15 through 1996-06-14; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **Goddess Coal Corp LLC → Harlan Fuel Company:** 1996-06-15 through 2001-08-31; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **Thomas King  Evans → Debra Lynn Coals, Inc.:** 2001-09-01 through 2003-01-28; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **Stanley R  Ditty → Sequoia Energy LLC:** 2003-01-29 through 2007-07-19; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **James C  Justice II et al → Sequoia Energy LLC:** 2007-07-20 through 2016-05-03; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.
- **Douglas  Warriner → Double Branch Energy, LLC.:** 2016-05-04 through current/open; derived from co-tenure at mine 1512428; source `msha-controller-operator-history`.

- History rows: 10
- Typed edges: 29
- 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 12 historical accident/injury rows; 0 coded fatalities and 338 lost days across the published record.
2. **COMPLIANCE — 1 since 2021:** Violations and penalties 783 violation rows across the full record; 266 carry an S&S flag and $375,589 appears in current assessed amounts.
3. **HEALTH — 223 samples:** Occupational health samples 145 coal dust; 5 coal quartz; 73 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 378 linked rows:** Contests, conferences and decisions 166 contested-violation rows, 170 civil-penalty docket/decision rows, and 42 conference records linked by issuance number.
6. **CONTRACTORS — 21 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 — 14 since 2021:** Inspections 110 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 41.12 — Changes; notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.12
- **30 CFR 62.180 — Training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.180
- **30 CFR 77.1707 — First aid equipment; location; minimum requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1707
- **30 CFR 77.502-2 — Electric equipment; frequency of examination and testing.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502-2
- **30 CFR 48.23 — Training plans; time of submission; where filed; information required; time for approval; method for disapproval; commencement of training; approval of instructors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.23
- **30 CFR 77.502 — Electric equipment; examination, testing, and maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502
- **30 CFR 77.1103 — Flammable liquids; storage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1103
- **30 CFR 77.1110 — Examination and maintenance of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 12 rows; 2005-04-29 through 2013-04-28; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2017-04-17 through 2017-04-17; source ID `msha-addresses`
- **Assessed Violations:** 761 rows; 2001-12-04 through 2024-12-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 170 rows; 2009-07-15 through 2015-11-06; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 145 rows; 2002-09-23 through 2017-09-19; source ID `msha-coal-dust-samples`
- **Conferences:** 42 rows; 2003-04-01 through 2013-07-17; source ID `msha-conferences`
- **Contested Violations:** 166 rows; 2008-02-08 through 2015-04-13; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,287 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 268 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 10 rows; 1980-07-01 through 2016-05-04; source ID `msha-controller-operator-history`
- **Inspections:** 110 rows; 2000-05-08 through 2026-06-23; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 176 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 37 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 73 rows; 2002-09-23 through 2017-09-19; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 5 rows; 2011-03-04 through 2011-08-11; source ID `msha-quartz-samples`
- **Violations:** 783 rows; 2001-12-04 through 2024-12-17; 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/prep-plant-1512428`
- JSON: `/api/v1/mines/prep-plant-1512428`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1512428/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1512428/relationships`
- MCP resource: `mine://1512428/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`