# RICH HILL UNDERGROUND MINE & PLANT

- **MSHA mine ID:** 3608864
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Fayette, PA
- **Operator:** Heidelberg Materials Northeast LLC
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 5,700
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials Northeast LLC (L16322) → RICH HILL UNDERGROUND MINE & PLANT (3608864)**

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

## Controller and operator valid-time history

- **USS Holdings Inc → Hanson Aggregates BMC, Inc.:** 2000-06-01 through 2003-07-18; derived from co-tenure at mine 3608864; source `msha-controller-operator-history`.
- **Hanson PLC → Hanson Aggregates BMC, Inc.:** 2003-07-19 through 2007-08-22; derived from co-tenure at mine 3608864; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Hanson Aggregates BMC, Inc.:** 2007-08-23 through 2020-12-31; derived from co-tenure at mine 3608864; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials Northeast LLC:** 2021-01-01 through current/open; derived from co-tenure at mine 3608864; source `msha-controller-operator-history`.
- **Hanson PLC → Heidelberg Materials Northeast LLC:** 2021-01-01 through 2007-08-22; derived from co-tenure at mine 3608864; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- 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 — 1 since 2021:** Accidents and injuries 16 historical accident/injury rows; 0 coded fatalities and 248 lost days across the published record.
2. **COMPLIANCE — 34 since 2021:** Violations and penalties 458 violation rows across the full record; 96 carry an S&S flag and $184,394 appears in current assessed amounts.
3. **HEALTH — 371 samples:** Occupational health samples 353 personal; 18 area. 21 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 10K employee hours and 17 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 159 linked rows:** Contests, conferences and decisions 72 contested-violation rows, 69 civil-penalty docket/decision rows, and 18 conference records linked by issuance number.
6. **CONTRACTORS — 14 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 — 28 since 2021:** Inspections 122 inspection events and 5K 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 57.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12018
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20003
- **30 CFR 57.8520 — Ventilation plan.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-G/section-57.8520
- **30 CFR 57.12001 — Circuit overload protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12001
- **30 CFR 57.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14101
- **30 CFR 57.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-B/section-57.3200
- **30 CFR 57.11058 — Check-in, check-out system.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11058
- **30 CFR 57.14131 — Seat belts for surface haulage trucks.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14131
- **30 CFR 57.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11002

## Source coverage

- **Accident, Injuries, and Illnesses:** 16 rows; 2009-03-02 through 2025-10-01; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-04-10 through 2025-04-10; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 18 rows; 2010-03-18 through 2026-06-22; source ID `msha-area-samples`
- **Assessed Violations:** 450 rows; 2000-12-19 through 2026-07-30; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 69 rows; 2010-04-01 through 2019-05-13; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 18 rows; 2002-01-25 through 2017-07-31; source ID `msha-conferences`
- **Contested Violations:** 72 rows; 2008-08-20 through 2019-01-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 3,277 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 733 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2000-06-01 through 2021-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 122 rows; 2000-09-19 through 2026-07-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 20 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 87 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:** 353 rows; 2001-06-07 through 2026-07-30; source ID `msha-personal-health-samples`
- **Violations:** 458 rows; 2000-12-19 through 2026-07-30; 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/rich-hill-underground-mine-plant-3608864`
- JSON: `/api/v1/mines/rich-hill-underground-mine-plant-3608864`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3608864/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3608864/relationships`
- MCP resource: `mine://3608864/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`