# CHALLENGER YARD

- **MSHA mine ID:** 3608316
- **Status:** Active
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Indiana, PA
- **Operator:** MILLCREEK PROCESSING
- **Controller:** Ardmore Fuels Inc; Green Valley Coal Inc
- **Public source rows linked:** 1,021
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Ardmore Fuels Inc; Green Valley Coal Inc (C13826) → MILLCREEK PROCESSING (P20282) → CHALLENGER YARD (3608316)**

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

## Controller and operator valid-time history

- **Green Valley Coal Inc et al → Millcreek Processing:** 1992-01-01 through current/open; derived from co-tenure at mine 3608316; source `msha-controller-operator-history`.
- **Ardmore Fuels Inc et al → Millcreek Processing:** 1992-01-01 through current/open; derived from co-tenure at mine 3608316; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 4
- 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 — 0 since 2021:** Accidents and injuries 2 historical accident/injury rows; 0 coded fatalities and 297 lost days across the published record.
2. **COMPLIANCE — 18 since 2021:** Violations and penalties 65 violation rows across the full record; 25 carry an S&S flag and $8,504 appears in current assessed amounts.
3. **HEALTH — 222 samples:** Occupational health samples 145 coal dust; 3 coal quartz; 74 noise. 0 personal-sample rows have a published C/E ratio above 1; 0 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 3K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 — 13 since 2021:** Inspections 88 inspection events and 1K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 0 short tons
- **Labor hours:** 14,573
- **Average employees:** 8
- **Coal supply region:** Appalachia Northern
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 77.400 — Mechanical equipment guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400
- **30 CFR 77.512 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.512
- **30 CFR 77.506 — Electric equipment and circuits; overload and short-circuit protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.506
- **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 77.404 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.1110 — Examination and maintenance of firefighting equipment.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110
- **30 CFR 77.201-1 — Tests for methane; qualified person; use of approved device.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.201-1
- **30 CFR 77.1713 — Daily inspection of surface coal mine; certified person; reports of inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1713
- **30 CFR 77.205 — Travelways at surface installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2001-07-18 through 2002-10-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2021-03-03 through 2021-03-03; source ID `msha-addresses`
- **Assessed Violations:** 65 rows; 2000-04-24 through 2025-08-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2011-09-15 through 2011-09-15; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 145 rows; 2000-04-25 through 2026-06-23; source ID `msha-coal-dust-samples`
- **Conferences:** 3 rows; 2011-09-15 through 2011-09-15; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2010-09-23 through 2010-09-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 236 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 64 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1992-01-01 through 1992-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 88 rows; 2000-04-20 through 2026-06-16; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 212 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 74 rows; 2000-04-25 through 2026-01-06; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 3 rows; 2008-04-07 through 2015-11-17; source ID `msha-quartz-samples`
- **Violations:** 65 rows; 2000-04-24 through 2025-08-27; 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/challenger-yard-3608316`
- JSON: `/api/v1/mines/challenger-yard-3608316`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3608316/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3608316/relationships`
- MCP resource: `mine://3608316/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`