# JV 20 Mine

- **MSHA mine ID:** 4406839
- **Status:** Temporarily Idled
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Buchanan, VA
- **Operator:** Mountaineer Metallurgical Holdings LLC
- **Controller:** C6 Ventures LLC; Mark  Nelson
- **Public source rows linked:** 4,486
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**C6 Ventures LLC; Mark  Nelson (0157861) → Mountaineer Metallurgical Holdings LLC (0172933) → JV 20 Mine (4406839)**

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

## Controller and operator valid-time history

- **Sunoco, Inc. → Jewell Smokeless Coal Corp:** 1996-05-01 through 1997-01-19; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Robert P  Ratliff → Rat Contractors Inc:** 1997-01-20 through 1997-10-07; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Sunoco, Inc. → Dominion Coal Corporation:** 1997-10-08 through 2012-01-16; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **SunCoke Energy Incorporated → Jewell Smokeless Coal Corp:** 2012-01-17 through 1997-01-19; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **SunCoke Energy Incorporated → Dominion Coal Corporation:** 2012-01-17 through 2015-01-28; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Steven T  Ratliff et al → Omega Mining Beehive Coal, LLC:** 2015-01-29 through 2016-03-30; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Noah L  Vandyke et al → Omega Mining Beehive Coal, LLC:** 2015-01-29 through 2016-03-30; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Jeffery A  Hoops → Blackjewel L.L.C.:** 2016-03-31 through 2019-09-01; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Rhino Resource Partners LP → Jewell Valley Mining LLC:** 2019-09-02 through 2020-09-28; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **Mark  Nelson Et Al → Mountaineer Metallurgical Holdings LLC:** 2020-09-29 through current/open; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.
- **C6 Ventures LLC Et Al → Mountaineer Metallurgical Holdings LLC:** 2020-09-29 through current/open; derived from co-tenure at mine 4406839; source `msha-controller-operator-history`.

- History rows: 11
- Typed edges: 26
- Interval anomalies: 1
- 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 44 historical accident/injury rows; 0 coded fatalities and 538 lost days across the published record.
2. **COMPLIANCE — 1 since 2021:** Violations and penalties 1,022 violation rows across the full record; 294 carry an S&S flag and $344,697 appears in current assessed amounts.
3. **HEALTH — 2K samples:** Occupational health samples 1,354 coal dust; 70 coal quartz; 126 noise. 0 personal-sample rows have a published C/E ratio above 1; 12 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 — 28K tons:** Quarterly production and employment 6K employee hours and 11 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 246 linked rows:** Contests, conferences and decisions 114 contested-violation rows, 116 civil-penalty docket/decision rows, and 16 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 11 since 2021:** Inspections 272 inspection events and 11K 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 75.1711-3 — Openings of active mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1711-3
- **30 CFR 75.310 — Installation of main mine fans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.310
- **30 CFR 75.1702 — Smoking; prohibition.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1702
- **30 CFR 75.904 — Identification of circuit breakers.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-J/section-75.904
- **30 CFR 75.1725 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1725
- **30 CFR 75.503 — Permissible electric face equipment; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **30 CFR 75.512 — Electric equipment; examination, testing and maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.512
- **30 CFR 75.364 — Weekly examination.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.364
- **30 CFR 75.400 — Accumulation of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400

## Source coverage

- **Accident, Injuries, and Illnesses:** 44 rows; 2000-01-07 through 2018-02-08; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-08-25 through 2026-08-25; source ID `msha-addresses`
- **Assessed Violations:** 1,002 rows; 2000-01-13 through 2024-12-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 116 rows; 2002-12-18 through 2019-10-08; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 1,354 rows; 2000-01-03 through 2016-02-12; source ID `msha-coal-dust-samples`
- **Conferences:** 16 rows; 2001-12-11 through 2016-04-25; source ID `msha-conferences`
- **Contested Violations:** 114 rows; 2009-05-26 through 2019-02-26; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 219 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 57 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 11 rows; 1996-05-01 through 2020-09-29; source ID `msha-controller-operator-history`
- **Inspections:** 272 rows; 2000-01-06 through 2026-09-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 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:** 126 rows; 2000-01-12 through 2016-02-17; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 70 rows; 2000-04-10 through 2016-02-11; source ID `msha-quartz-samples`
- **Violations:** 1,022 rows; 2000-01-13 through 2024-12-05; 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/jv-20-mine-4406839`
- JSON: `/api/v1/mines/jv-20-mine-4406839`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4406839/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4406839/relationships`
- MCP resource: `mine://4406839/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`