# Mine No. 12

- **MSHA mine ID:** 4406592
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Buchanan, VA
- **Operator:** Dominion Coal Corporation
- **Controller:** SunCoke Energy Incorporated
- **Public source rows linked:** 815
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**SunCoke Energy Incorporated (0104093) → Dominion Coal Corporation (P10904) → Mine No. 12 (4406592)**

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

## Controller and operator valid-time history

- **Sunoco, Inc. → Dominion Coal Corporation:** 1990-07-01 through 1992-06-01; derived from co-tenure at mine 4406592; source `msha-controller-operator-history`.
- **James  Taylor et al → Chad Coal Corp:** 1992-06-02 through 2002-05-28; derived from co-tenure at mine 4406592; source `msha-controller-operator-history`.
- **Coy  Taylor et al → Chad Coal Corp:** 1992-06-02 through 2002-05-28; derived from co-tenure at mine 4406592; source `msha-controller-operator-history`.
- **Sunoco, Inc. → Dominion Coal Corporation:** 2002-05-29 through 2012-01-16; derived from co-tenure at mine 4406592; source `msha-controller-operator-history`.
- **SunCoke Energy Incorporated → Dominion Coal Corporation:** 2012-01-17 through 1992-06-01; derived from co-tenure at mine 4406592; source `msha-controller-operator-history`.
- **SunCoke Energy Incorporated → Dominion Coal Corporation:** 2012-01-17 through current/open; derived from co-tenure at mine 4406592; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 12
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 146 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 113 violation rows across the full record; 38 carry an S&S flag and $8,791 appears in current assessed amounts.
3. **HEALTH — 238 samples:** Occupational health samples 209 coal dust; 15 coal quartz; 14 noise. 0 personal-sample rows have a published C/E ratio above 1; 6 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 — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 54 inspection events and 1K 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 77.1710 — Protective clothing; requirements.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1710
- **30 CFR 77.509 — Transformers; installation and guarding.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.509
- **30 CFR 75.517 — Power wires and cables; insulation and protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517
- **30 CFR 75.503 — Permissible electric face equipment; maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **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
- **30 CFR 75.810 — High-voltage trailing cables; splices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-I/section-75.810
- **30 CFR 75.701 — Grounding metallic frames, casings, and other enclosures of electric equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-H/section-75.701
- **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 77.1605 — Loading and haulage equipment; installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **30 CFR 75.370 — Mine ventilation plan; submission and approval.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2000-08-22 through 2001-08-03; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2004-07-02 through 2004-07-02; source ID `msha-addresses`
- **Assessed Violations:** 113 rows; 2000-01-26 through 2002-02-25; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 209 rows; 2000-01-04 through 2002-03-25; source ID `msha-coal-dust-samples`
- **Contractor Employment and Production — Quarterly:** 193 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 51 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1990-07-01 through 2002-05-29; source ID `msha-controller-operator-history`
- **Inspections:** 54 rows; 2000-01-20 through 2002-08-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 33 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 9 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 14 rows; 2000-02-17 through 2002-02-25; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 15 rows; 2000-02-08 through 2002-03-14; source ID `msha-quartz-samples`
- **Violations:** 113 rows; 2000-01-26 through 2002-02-25; 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/mine-no-12-4406592`
- JSON: `/api/v1/mines/mine-no-12-4406592`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4406592/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4406592/relationships`
- MCP resource: `mine://4406592/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`