# Slip Ridge Cedar Grove Mine

- **MSHA mine ID:** 4609048
- **Status:** NonProducing
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Raleigh, WV
- **Operator:** Marfork Coal Company, LLC
- **Controller:** Alpha Metallurgical Resources Inc
- **Public source rows linked:** 20,758
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Alpha Metallurgical Resources Inc (0127321) → Marfork Coal Company, LLC (P22603) → Slip Ridge Cedar Grove Mine (4609048)**

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

## Controller and operator valid-time history

- **Massey Energy Company → Marfork Coal Company, LLC:** 2004-06-23 through 2011-05-31; derived from co-tenure at mine 4609048; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Marfork Coal Company, LLC:** 2011-06-01 through 2016-07-25; derived from co-tenure at mine 4609048; source `msha-controller-operator-history`.
- **Alpha Natural Resources Holdings, Inc → Marfork Coal Company, LLC:** 2016-07-26 through 2018-11-08; derived from co-tenure at mine 4609048; source `msha-controller-operator-history`.
- **Alpha Metallurgical Resources Inc → Marfork Coal Company, LLC:** 2018-11-09 through current/open; derived from co-tenure at mine 4609048; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 9
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 3 since 2021:** Accidents and injuries 222 historical accident/injury rows; 0 coded fatalities and 7,287 lost days across the published record.
2. **COMPLIANCE — 110 since 2021:** Violations and penalties 3,440 violation rows across the full record; 771 carry an S&S flag and $3,596,710 appears in current assessed amounts.
3. **HEALTH — 9K samples:** Occupational health samples 8,640 coal dust; 405 coal quartz; 233 noise. 0 personal-sample rows have a published C/E ratio above 1; 26 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 17K employee hours and 29 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1,757 linked rows:** Contests, conferences and decisions 840 contested-violation rows, 840 civil-penalty docket/decision rows, and 77 conference records linked by issuance number.
6. **CONTRACTORS — 11 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 — 34 since 2021:** Inspections 196 inspection events and 36K 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 75.1722 — Mechanical equipment guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1722
- **30 CFR 75.351 — Atmospheric monitoring systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.351
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **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 75.1731 — Maintenance of belt conveyors and belt conveyor entries.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1731
- **30 CFR 75.350 — Belt air course ventilation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.350
- **30 CFR 70.209 — Quarterly sampling; designated areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-70/subpart-C/section-70.209
- **30 CFR 75.202 — Protection from falls of roof, face and ribs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 75.512 — Electric equipment; examination, testing and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.512
- **30 CFR 75.1101-10 — Water sprinkler systems; fire warning devices at belt drives.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1101-10

## Source coverage

- **Accident, Injuries, and Illnesses:** 222 rows; 2005-04-20 through 2024-01-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-07-03 through 2020-07-03; source ID `msha-addresses`
- **Assessed Violations:** 3,375 rows; 2004-11-15 through 2026-06-03; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 840 rows; 2007-05-10 through 2022-09-20; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 8,640 rows; 2000-04-17 through 2026-10-08; source ID `msha-coal-dust-samples`
- **Conferences:** 77 rows; 2006-01-18 through 2024-06-26; source ID `msha-conferences`
- **Contested Violations:** 840 rows; 2006-06-26 through 2022-03-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,877 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 316 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2004-06-23 through 2004-06-23; source ID `msha-controller-operator-history`
- **Inspections:** 196 rows; 2004-08-09 through 2026-08-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 244 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 47 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 233 rows; 2008-02-21 through 2024-11-12; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 405 rows; 2004-11-17 through 2026-03-02; source ID `msha-quartz-samples`
- **Violations:** 3,440 rows; 2004-11-15 through 2026-08-27; 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/slip-ridge-cedar-grove-mine-4609048`
- JSON: `/api/v1/mines/slip-ridge-cedar-grove-mine-4609048`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4609048/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4609048/relationships`
- MCP resource: `mine://4609048/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`