# #10

- **MSHA mine ID:** 1517266
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Pike, KY
- **Operator:** Cheyenne Elkhorn Coal Co Inc
- **Controller:** Henry  Chaney Jr
- **Public source rows linked:** 1,281
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Henry  Chaney Jr (C13591) → Cheyenne Elkhorn Coal Co Inc (P10978) → #10 (1517266)**

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

## Controller and operator valid-time history

- **Matney William H → Big Bear Coal Company Inc:** 1992-07-01 through 1992-10-28; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Ronnie  Thacker et al → Chloe Elkhorn Inc:** 1992-10-29 through 2004-10-06; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Freddy  Thacker et al → Chloe Elkhorn Inc:** 1992-10-29 through 2004-10-06; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Eddie  Lawson → Ivy Fork Mining LLC:** 2004-10-07 through 2006-01-08; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Josh  Osborne → Midgard Mining Company LLC:** 2006-01-09 through 2006-11-20; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Bradley B  Hopkins → L & E Contracting Inc:** 2006-11-21 through 2007-05-01; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Joey  Taylor → L & E Contracting Inc:** 2006-11-21 through 2006-11-20; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.
- **Henry  Chaney Jr → Cheyenne Elkhorn Coal Co Inc:** 2007-05-02 through current/open; derived from co-tenure at mine 1517266; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 21
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 73 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 385 violation rows across the full record; 146 carry an S&S flag and $74,011 appears in current assessed amounts.
3. **HEALTH — 393 samples:** Occupational health samples 345 coal dust; 17 coal quartz; 31 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 — 34 linked rows:** Contests, conferences and decisions 16 contested-violation rows, 16 civil-penalty docket/decision rows, and 2 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 59 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 75.206 — Conventional roof support.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.206
- **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
- **30 CFR 75.380 — Escapeways; bituminous and lignite mines.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.380
- **30 CFR 75.400 — Accumulation of combustible materials.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **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 75.1100-3 — Condition and examination of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1100-3
- **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
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2009-03-27 through 2010-09-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-06-10 through 2011-06-10; source ID `msha-addresses`
- **Assessed Violations:** 372 rows; 2005-08-03 through 2011-03-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 16 rows; 2010-04-29 through 2013-04-18; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 345 rows; 2006-03-22 through 2011-03-23; source ID `msha-coal-dust-samples`
- **Conferences:** 2 rows; 2007-08-21 through 2007-08-21; source ID `msha-conferences`
- **Contested Violations:** 16 rows; 2008-12-11 through 2011-03-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 7 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:** 8 rows; 1992-07-01 through 2007-05-02; source ID `msha-controller-operator-history`
- **Inspections:** 59 rows; 2004-12-27 through 2011-06-10; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 17 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 31 rows; 2006-09-26 through 2010-10-26; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 17 rows; 2006-03-22 through 2011-02-09; source ID `msha-quartz-samples`
- **Violations:** 385 rows; 2005-08-03 through 2011-03-24; 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/10-1517266`
- JSON: `/api/v1/mines/10-1517266`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1517266/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1517266/relationships`
- MCP resource: `mine://1517266/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`