# Murrinsville Plant

- **MSHA mine ID:** 3609318
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Butler, PA
- **Operator:** Allegheny Mineral Corp
- **Controller:** Snyder Associated Companies Inc
- **Public source rows linked:** 2,232
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Snyder Associated Companies Inc (M00734) → Allegheny Mineral Corp (L00874) → Murrinsville Plant (3609318)**

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

## Controller and operator valid-time history

- **Snyder Associated Companies Inc → Allegheny Mineral Corp:** 2005-03-29 through current/open; derived from co-tenure at mine 3609318; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 18 historical accident/injury rows; 0 coded fatalities and 681 lost days across the published record.
2. **COMPLIANCE — 15 since 2021:** Violations and penalties 75 violation rows across the full record; 14 carry an S&S flag and $13,723 appears in current assessed amounts.
3. **HEALTH — 67 samples:** Occupational health samples 67 personal. 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 8 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 — 15 since 2021:** Inspections 51 inspection events and 964 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 56.4203 — Extinguisher recharging or replacement.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4203
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.14206 — Securing movable parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14206
- **30 CFR 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.14131 — Seat belts for haulage trucks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14131
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 47.44 — Temporary, portable containers.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 56.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3200
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207

## Source coverage

- **Accident, Injuries, and Illnesses:** 18 rows; 2005-10-07 through 2025-02-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-10-08 through 2009-10-08; source ID `msha-addresses`
- **Assessed Violations:** 70 rows; 2006-12-19 through 2026-05-12; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2011-07-02 through 2024-01-22; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 4 rows; 2010-09-17 through 2023-05-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,533 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 363 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 2005-03-29 through 2005-03-29; source ID `msha-controller-operator-history`
- **Inspections:** 51 rows; 2005-08-04 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 44 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 67 rows; 2012-06-28 through 2026-05-13; source ID `msha-personal-health-samples`
- **Violations:** 75 rows; 2006-12-19 through 2026-10-07; 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/murrinsville-plant-3609318`
- JSON: `/api/v1/mines/murrinsville-plant-3609318`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3609318/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3609318/relationships`
- MCP resource: `mine://3609318/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`