# Thomasville Mine

- **MSHA mine ID:** 3603432
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** York, PA
- **Operator:** Pennsy Supply Inc
- **Controller:** CRH PLC
- **Public source rows linked:** 5,082
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Pennsy Supply Inc (L13625) → Thomasville Mine (3603432)**

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

## Controller and operator valid-time history

- **Medusa Corp → Medusa Minerals Company:** 1950-01-01 through 1978-12-31; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **Crane Company → Thomasville Stone & Lime Company:** 1979-01-01 through 1988-10-06; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **Medusa Corp → Medusa Minerals Company:** 1988-10-07 through 1998-06-02; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **Southdown Inc → Southdown Inc:** 1998-06-03 through 2000-11-02; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Inc:** 2000-11-03 through 2002-10-17; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **CRH PLC → Oldcastle Stone Products:** 2002-10-18 through 2005-12-14; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **CRH PLC → Oldcastle Industrial Minerals:** 2005-12-15 through 2008-12-31; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.
- **CRH PLC → Pennsy Supply Inc:** 2009-01-01 through current/open; derived from co-tenure at mine 3603432; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 23
- 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 — 13 since 2021:** Accidents and injuries 75 historical accident/injury rows; 0 coded fatalities and 993 lost days across the published record.
2. **COMPLIANCE — 137 since 2021:** Violations and penalties 603 violation rows across the full record; 127 carry an S&S flag and $166,019 appears in current assessed amounts.
3. **HEALTH — 395 samples:** Occupational health samples 379 personal; 16 area. 14 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 46K employee hours and 70 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 160 linked rows:** Contests, conferences and decisions 58 contested-violation rows, 59 civil-penalty docket/decision rows, and 43 conference records linked by issuance number.
6. **CONTRACTORS — 20 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 — 37 since 2021:** Inspections 173 inspection events and 9K 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 57.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20003
- **30 CFR 48.28 — Annual refresher training of miners; minimum courses of instruction; hours of instruction.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.28
- **30 CFR 57.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100
- **30 CFR 57.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12008
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **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 57.4102 — Spillage and leakage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4102
- **30 CFR 48.25 — Training of new miners; minimum courses of instruction; hours of instruction.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.25

## Source coverage

- **Accident, Injuries, and Illnesses:** 75 rows; 2000-05-10 through 2026-03-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-01-20 through 2009-01-20; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 16 rows; 2020-01-14 through 2026-04-08; source ID `msha-area-samples`
- **Assessed Violations:** 586 rows; 2000-02-29 through 2026-07-14; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 59 rows; 2002-06-07 through 2024-07-15; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 43 rows; 2000-12-01 through 2012-04-02; source ID `msha-conferences`
- **Contested Violations:** 58 rows; 2003-09-04 through 2023-07-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,196 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 430 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2009-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 173 rows; 2000-02-28 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 363 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 91 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:** 379 rows; 2001-03-22 through 2026-07-15; source ID `msha-personal-health-samples`
- **Violations:** 603 rows; 2000-02-29 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/thomasville-mine-3603432`
- JSON: `/api/v1/mines/thomasville-mine-3603432`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3603432/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3603432/relationships`
- MCP resource: `mine://3603432/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`