# Dobbin Ridge Prep Plant

- **MSHA mine ID:** 4607837
- **Status:** Abandoned
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Grant, WV
- **Operator:** Vindex Energy LLC
- **Controller:** Arch Resources Inc
- **Public source rows linked:** 4,865
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Arch Resources Inc (C15561) → Vindex Energy LLC (P23706) → Dobbin Ridge Prep Plant (4607837)**

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

## Controller and operator valid-time history

- **Carl Del Signore Family Trust → Buffalo Coal Company Inc:** 1990-02-01 through 2001-03-29; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Gerald W  Ramsburg  et al → Buffalo Coal Company Inc:** 2001-03-30 through 2006-08-29; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Charles R  Howdershelt  et al → Buffalo Coal Company Inc:** 2001-03-30 through 2006-08-29; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **International Coal Group Inc (ICG) → Vindex Energy Corporation:** 2006-08-30 through 2011-06-14; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Anker Group Inc → Vindex Energy Corporation:** 2006-08-30 through 2005-11-17; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Arch Resources Inc → Vindex Energy Corporation:** 2011-06-15 through 2014-12-09; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Freddie A  Taylor → Taylor Minerals, Inc.:** 2014-12-16 through 2015-10-25; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **International Coal Group Inc (ICG) → Vindex Energy LLC:** 2015-10-26 through 2011-06-14; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Anker Group Inc → Vindex Energy LLC:** 2015-10-26 through 2005-11-17; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.
- **Arch Resources Inc → Vindex Energy LLC:** 2015-10-26 through current/open; derived from co-tenure at mine 4607837; source `msha-controller-operator-history`.

- History rows: 10
- Typed edges: 21
- 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 24 historical accident/injury rows; 0 coded fatalities and 433 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 174 violation rows across the full record; 104 carry an S&S flag and $31,967 appears in current assessed amounts.
3. **HEALTH — 303 samples:** Occupational health samples 208 coal dust; 7 coal quartz; 88 noise. 0 personal-sample rows have a published C/E ratio above 1; 9 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 5K employee hours and 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 19 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 8 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 16 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 — 0 since 2021:** Inspections 91 inspection events and 2K 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 77.1607 — 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 77.205 — Travelways at surface installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.1108 — Firefighting equipment; requirements; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1108
- **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 77.200 — 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 62.120 — Action level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.120
- **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 77.201-1 — Tests for methane; qualified person; use of approved device.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.201-1
- **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 77.700 — Grounding metallic sheaths, armors, and conduits enclosing power conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-H/section-77.700
- **30 CFR 77.402 — Hand-held power tools; safety devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.402

## Source coverage

- **Accident, Injuries, and Illnesses:** 24 rows; 2000-01-24 through 2017-01-18; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2018-08-29 through 2018-08-29; source ID `msha-addresses`
- **Assessed Violations:** 170 rows; 2000-05-09 through 2018-04-12; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 8 rows; 2011-06-29 through 2017-01-31; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 208 rows; 2000-02-15 through 2018-04-24; source ID `msha-coal-dust-samples`
- **Conferences:** 4 rows; 2001-09-12 through 2011-06-29; source ID `msha-conferences`
- **Contested Violations:** 7 rows; 2010-08-03 through 2015-09-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 3,318 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 622 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 10 rows; 1990-02-01 through 2015-10-26; source ID `msha-controller-operator-history`
- **Inspections:** 91 rows; 2000-05-02 through 2018-08-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 109 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 23 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 88 rows; 2001-08-14 through 2018-04-12; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 7 rows; 2000-05-02 through 2011-08-01; source ID `msha-quartz-samples`
- **Violations:** 174 rows; 2000-05-09 through 2018-04-12; 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/dobbin-ridge-prep-plant-4607837`
- JSON: `/api/v1/mines/dobbin-ridge-prep-plant-4607837`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4607837/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4607837/relationships`
- MCP resource: `mine://4607837/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`