# Delbarton Preparation Plant

- **MSHA mine ID:** 4605649
- **Status:** Active
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Mingo, WV
- **Operator:** Coal Mac, LLC
- **Controller:** John Mitch Potter
- **Public source rows linked:** 5,820
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**John Mitch Potter (0144441) → Coal Mac, LLC (P20596) → Delbarton Preparation Plant (4605649)**

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

## Controller and operator valid-time history

- **Hart Robert C → Inverness Coal Company:** 1977-06-01 through 1981-08-10; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **James O  Bunn  et al → Northland Resources Limited Liability Company:** 1981-08-11 through 1998-12-21; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **Massey Energy Company → Delbarton Mining Company, LLC:** 1998-12-22 through 2011-05-31; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Delbarton Mining Company, LLC:** 2011-06-01 through 2016-07-25; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Delbarton Mining Company, LLC:** 2016-07-26 through 2018-11-08; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **Alpha Metallurgical Resources Inc → Delbarton Mining Company, LLC:** 2018-11-09 through 2021-11-15; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **John T  Quintrell → Pocahontas Processing, LLC:** 2021-11-16 through 2025-06-11; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **John Mitch Potter → Coal Mac, LLC:** 2025-06-12 through current/open; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **Ashland Inc et al → Coal Mac, LLC:** 2025-06-12 through 1997-06-30; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.
- **Arch Resources Inc → Coal Mac, LLC:** 2025-06-12 through 2019-10-22; derived from co-tenure at mine 4605649; source `msha-controller-operator-history`.

- History rows: 10
- Typed edges: 25
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 2 since 2021:** Accidents and injuries 37 historical accident/injury rows; 0 coded fatalities and 1,261 lost days across the published record.
2. **COMPLIANCE — 316 since 2021:** Violations and penalties 815 violation rows across the full record; 298 carry an S&S flag and $352,949 appears in current assessed amounts.
3. **HEALTH — 488 samples:** Occupational health samples 333 coal dust; 15 coal quartz; 140 noise. 0 personal-sample rows have a published C/E ratio above 1; 27 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 17K employee hours and 23 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 346 linked rows:** Contests, conferences and decisions 161 contested-violation rows, 161 civil-penalty docket/decision rows, and 24 conference records linked by issuance number.
6. **CONTRACTORS — 28 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 — 64 since 2021:** Inspections 263 inspection events and 6K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 0 short tons
- **Labor hours:** 42,067
- **Average employees:** 18
- **Coal supply region:** Appalachia Central
- **Union code:** Not published
- **Published rows under this MSHA ID:** 2

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **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 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 77.400 — Mechanical equipment guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **30 CFR 77.1000 — Highwalls, pits and spoil banks; plans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1000
- **30 CFR 71.501 — Sanitary toilet facilities; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-F/section-71.501
- **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:** 37 rows; 2000-11-27 through 2026-09-16; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-05-20 through 2025-05-20; source ID `msha-addresses`
- **Assessed Violations:** 791 rows; 2000-03-08 through 2026-08-31; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 161 rows; 2008-02-05 through 2025-05-27; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 333 rows; 2000-03-08 through 2026-09-29; source ID `msha-coal-dust-samples`
- **Conferences:** 24 rows; 2002-07-29 through 2023-05-05; source ID `msha-conferences`
- **Contested Violations:** 161 rows; 2006-07-10 through 2025-01-16; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,475 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 536 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 10 rows; 1977-06-01 through 2025-06-12; source ID `msha-controller-operator-history`
- **Inspections:** 263 rows; 2000-01-11 through 2026-10-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 12 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 45 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 140 rows; 2001-03-14 through 2026-10-13; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 15 rows; 2001-10-03 through 2026-04-13; source ID `msha-quartz-samples`
- **Violations:** 815 rows; 2000-03-08 through 2026-10-09; 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/delbarton-preparation-plant-4605649`
- JSON: `/api/v1/mines/delbarton-preparation-plant-4605649`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4605649/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4605649/relationships`
- MCP resource: `mine://4605649/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`