# Skull Fork

- **MSHA mine ID:** 1518186
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Knott, KY
- **Operator:** Kentucky May Mining
- **Controller:** Progress Energy Inc
- **Public source rows linked:** 258
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Progress Energy Inc (C16016) → Kentucky May Mining (P24571) → Skull Fork (1518186)**

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

## Controller and operator valid-time history

- **Don  Robertson → 3-D Mining Inc:** 1999-08-12 through 1999-11-02; derived from co-tenure at mine 1518186; source `msha-controller-operator-history`.
- **Yvonne  Yonts et al → Straight Fork Mining Inc:** 2000-09-20 through 2001-08-19; derived from co-tenure at mine 1518186; source `msha-controller-operator-history`.
- **Florida Progress Corporation → Kentucky May Mining:** 2000-11-30 through 1999-08-11; derived from co-tenure at mine 1518186; source `msha-controller-operator-history`.
- **Florida Progress Corporation → Kentucky May Mining:** 2000-11-30 through 2000-09-19; derived from co-tenure at mine 1518186; source `msha-controller-operator-history`.
- **Progress Energy Inc → Kentucky May Mining:** 2001-08-20 through current/open; derived from co-tenure at mine 1518186; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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 6 historical accident/injury rows; 0 coded fatalities and 502 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 43 violation rows across the full record; 14 carry an S&S flag and $3,089 appears in current assessed amounts.
3. **HEALTH — 113 samples:** Occupational health samples 101 coal dust; 7 coal quartz; 5 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 — 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 — 0 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 27 inspection events and 695 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 75.523-3 — Automatic emergency-parking brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.523-3
- **30 CFR 75.342 — Methane monitors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.342
- **30 CFR 62.120 — Action level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.120
- **30 CFR 75.370 — Mine ventilation plan; submission and approval.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370
- **30 CFR 75.1101-7 — Installation of water sprinkler systems; requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1101-7
- **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 75.208 — Warning devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.208
- **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 75.333 — Ventilation controls.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.333

## Source coverage

- **Accident, Injuries, and Illnesses:** 6 rows; 2000-02-22 through 2001-05-16; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2004-04-15 through 2004-04-15; source ID `msha-addresses`
- **Assessed Violations:** 43 rows; 2000-02-09 through 2001-07-12; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 101 rows; 2000-01-27 through 2001-07-16; source ID `msha-coal-dust-samples`
- **Controller and Operator History:** 5 rows; 1999-08-01 through 2001-08-20; source ID `msha-controller-operator-history`
- **Inspections:** 27 rows; 2000-01-24 through 2003-09-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 15 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **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:** 5 rows; 2001-07-11 through 2001-07-11; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 7 rows; 2000-01-27 through 2001-07-11; source ID `msha-quartz-samples`
- **Violations:** 43 rows; 2000-02-09 through 2001-07-12; 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/skull-fork-1518186`
- JSON: `/api/v1/mines/skull-fork-1518186`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1518186/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1518186/relationships`
- MCP resource: `mine://1518186/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`