# Derby Wilson Mine

- **MSHA mine ID:** 4407127
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Wise, VA
- **Operator:** Mill Branch Coal Corp
- **Controller:** Alpha Natural Resources, Inc.
- **Public source rows linked:** 2,001
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Alpha Natural Resources, Inc. (0041211) → Mill Branch Coal Corp (P23653) → Derby Wilson Mine (4407127)**

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

## Controller and operator valid-time history

- **Paul R  Ison  et al → Ambrose Branch Coal Co Inc:** 2005-02-28 through 2005-08-08; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Jessica B  Ison  et al → Ambrose Branch Coal Co Inc:** 2005-02-28 through 2005-08-08; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Bradley V  Hurley → North Star Energy, Inc.:** 2005-08-09 through 2009-06-02; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Cumberland Resources Corporation → Guest Mountain Mining Corporation:** 2009-06-03 through 2010-04-18; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Massey Energy Company → Guest Mountain Mining Corporation:** 2010-04-19 through 2011-05-31; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Guest Mountain Mining Corporation:** 2011-06-01 through 2012-12-31; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Mill Branch Coal Corp:** 2013-01-01 through current/open; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Massey Energy Company → Mill Branch Coal Corp:** 2013-01-01 through 2011-05-31; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.
- **Cumberland Resources Corporation → Mill Branch Coal Corp:** 2013-01-01 through 2010-04-18; derived from co-tenure at mine 4407127; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 19
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 14 historical accident/injury rows; 0 coded fatalities and 116 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 279 violation rows across the full record; 80 carry an S&S flag and $91,920 appears in current assessed amounts.
3. **HEALTH — 425 samples:** Occupational health samples 363 coal dust; 39 coal quartz; 23 noise. 0 personal-sample rows have a published C/E ratio above 1; 1 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 — 202 linked rows:** Contests, conferences and decisions 99 contested-violation rows, 99 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 77 inspection events and 3K 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 48.29 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.29
- **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 77.1110 — 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 75.202 — Protection from falls of roof, face and ribs.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 75.403 — Maintenance of incombustible content of rock dust.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.403
- **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 75.1910 — Nonpermissible diesel-powered equipment; electrical system design and performance requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1910
- **30 CFR 75.606 — Protection of trailing cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-G/section-75.606
- **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:** 14 rows; 2006-03-03 through 2013-03-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-11-04 through 2013-11-04; source ID `msha-addresses`
- **Assessed Violations:** 274 rows; 2005-11-18 through 2013-07-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 99 rows; 2011-04-04 through 2013-10-24; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 363 rows; 2006-02-15 through 2012-09-12; source ID `msha-coal-dust-samples`
- **Conferences:** 4 rows; 2006-02-23 through 2012-11-27; source ID `msha-conferences`
- **Contested Violations:** 99 rows; 2010-05-20 through 2012-09-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 552 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 122 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 2005-02-28 through 2013-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 77 rows; 2005-04-02 through 2013-11-04; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 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:** 23 rows; 2010-06-10 through 2011-10-23; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 39 rows; 2006-02-15 through 2012-09-12; source ID `msha-quartz-samples`
- **Violations:** 279 rows; 2005-11-18 through 2013-07-08; 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/derby-wilson-mine-4407127`
- JSON: `/api/v1/mines/derby-wilson-mine-4407127`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4407127/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4407127/relationships`
- MCP resource: `mine://4407127/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`