# North Fork Winifrede Deep Mine

- **MSHA mine ID:** 4609583
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Logan, WV
- **Operator:** Greenbrier Minerals, LLC
- **Controller:** Coronado Coal LLC
- **Public source rows linked:** 543
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Coronado Coal LLC (0109921) → Greenbrier Minerals, LLC (0129274) → North Fork Winifrede Deep Mine (4609583)**

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

## Controller and operator valid-time history

- **Coronado Coal LLC → Greenbrier Minerals, LLC:** 2019-11-05 through current/open; derived from co-tenure at mine 4609583; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- Interval anomalies: 0
- 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 — 4 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 106 since 2021:** Violations and penalties 106 violation rows across the full record; 24 carry an S&S flag and $32,815 appears in current assessed amounts.
3. **HEALTH — 285 samples:** Occupational health samples 247 coal dust; 16 coal quartz; 22 noise. 0 personal-sample rows have a published C/E ratio above 1; 3 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
5. **LEGAL — 22 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 11 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 23 since 2021:** Inspections 24 inspection events and 668 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 — Sealing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1711
- **30 CFR 75.1732 — Proximity detection systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1732
- **30 CFR 75.1714-7 — Multi-gas detectors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1714-7
- **30 CFR 75.202 — Protection from falls of roof, face and ribs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 75.220 — Roof control plan.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.220
- **30 CFR 77.1104 — Accumulations of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104
- **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 75.1714-6 — Emergency tethers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1714-6
- **30 CFR 75.1103-4 — Automatic fire sensor and warning device systems; installation; minimum requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1103-4

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2023-05-31 through 2023-07-26; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2024-04-22 through 2024-04-22; source ID `msha-addresses`
- **Assessed Violations:** 93 rows; 2022-08-15 through 2024-01-12; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 11 rows; 2023-05-09 through 2024-10-17; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 247 rows; 2022-09-14 through 2023-10-19; source ID `msha-coal-dust-samples`
- **Contested Violations:** 11 rows; 2022-11-14 through 2023-09-22; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 2019-11-05 through 2019-11-05; source ID `msha-controller-operator-history`
- **Inspections:** 24 rows; 2020-01-08 through 2024-04-19; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 4 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 22 rows; 2022-09-14 through 2023-10-04; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 16 rows; 2022-09-14 through 2023-10-04; source ID `msha-quartz-samples`
- **Violations:** 106 rows; 2022-08-03 through 2024-01-12; 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/north-fork-winifrede-deep-mine-4609583`
- JSON: `/api/v1/mines/north-fork-winifrede-deep-mine-4609583`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4609583/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4609583/relationships`
- MCP resource: `mine://4609583/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`