# Rheems Quarry

- **MSHA mine ID:** 3600111
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Lancaster, PA
- **Operator:** R.E. Pierson Materials Corp
- **Controller:** Richard E  Pierson
- **Public source rows linked:** 1,495
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Richard E  Pierson (M08900) → R.E. Pierson Materials Corp (L11508) → Rheems Quarry (3600111)**

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

## Controller and operator valid-time history

- **Mumma Robert M (Estate) & Max C Hempt → Union Quarries Inc:** 1950-01-01 through 2002-03-31; derived from co-tenure at mine 3600111; source `msha-controller-operator-history`.
- **Gerald P  Spearing  et al → Donegal Rock Products:** 2002-04-01 through 2008-11-23; derived from co-tenure at mine 3600111; source `msha-controller-operator-history`.
- **Richard E  Pierson → R.E. Pierson Materials Corp:** 2008-11-24 through current/open; derived from co-tenure at mine 3600111; 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 5 since 2021:** Accidents and injuries 10 historical accident/injury rows; 0 coded fatalities and 119 lost days across the published record.
2. **COMPLIANCE — 24 since 2021:** Violations and penalties 160 violation rows across the full record; 35 carry an S&S flag and $45,690 appears in current assessed amounts.
3. **HEALTH — 64 samples:** Occupational health samples 64 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 — 0 tons:** Quarterly production and employment 3K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 114 linked rows:** Contests, conferences and decisions 57 contested-violation rows, 57 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 20 since 2021:** Inspections 69 inspection events and 1K 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 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.14112 — Construction and maintenance of guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **30 CFR 56.16010 — Dropping materials from overhead.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16010
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 56.4501 — Fuel lines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4501
- **30 CFR 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30

## Source coverage

- **Accident, Injuries, and Illnesses:** 10 rows; 2009-07-08 through 2025-05-21; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-11-24 through 2008-11-24; source ID `msha-addresses`
- **Assessed Violations:** 157 rows; 2001-11-01 through 2026-06-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 57 rows; 2010-04-02 through 2024-06-24; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 57 rows; 2009-05-19 through 2022-12-28; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 688 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 141 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 2008-11-24; source ID `msha-controller-operator-history`
- **Inspections:** 69 rows; 2000-03-13 through 2026-06-04; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 33 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`
- **Metal and Nonmetal Personal Health Samples:** 64 rows; 2003-07-25 through 2025-01-16; source ID `msha-personal-health-samples`
- **Violations:** 160 rows; 2001-11-01 through 2026-06-02; 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/rheems-quarry-3600111`
- JSON: `/api/v1/mines/rheems-quarry-3600111`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3600111/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3600111/relationships`
- MCP resource: `mine://3600111/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`