# Warwick Mine

- **MSHA mine ID:** 3602374
- **Status:** Abandoned
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Greene, PA
- **Operator:** Duquesne Light Company
- **Controller:** DQE
- **Public source rows linked:** 54
- **Source coverage:** 7 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**DQE (C15588) → Duquesne Light Company (P23727) → Warwick Mine (3602374)**

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

## Controller and operator valid-time history

- **Duquesne Light Company → Duquesne Light Company:** 1950-01-01 through 1990-10-03; derived from co-tenure at mine 3602374; source `msha-controller-operator-history`.
- **Aloe Holding Inc → New Warwick Mining Company:** 1990-10-04 through 1997-03-18; derived from co-tenure at mine 3602374; source `msha-controller-operator-history`.
- **DQE → Duquesne Light Company:** 1997-03-19 through current/open; derived from co-tenure at mine 3602374; source `msha-controller-operator-history`.

- History rows: 3
- 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 2 violation rows across the full record; 1 carry an S&S flag and $121 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 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 17 inspection events and 198 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 77.216-4 — Water, sediment or slurry impoundments and impounding structures; reporting requirements; certification.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216-4

## Source coverage

- **Addresses of Record:** 1 rows; 2002-10-30 through 2002-10-30; source ID `msha-addresses`
- **Assessed Violations:** 2 rows; 2000-08-03 through 2001-03-19; source ID `msha-assessed-violations`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1997-03-19; source ID `msha-controller-operator-history`
- **Inspections:** 17 rows; 2000-03-24 through 2002-06-05; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 28 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 2 rows; 2000-08-03 through 2001-03-19; 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/warwick-mine-3602374`
- JSON: `/api/v1/mines/warwick-mine-3602374`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3602374/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3602374/relationships`
- MCP resource: `mine://3602374/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`