# Ottsville Quarry

- **MSHA mine ID:** 3600036
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Traprock
- **Location:** Bucks, PA
- **Operator:** Heidelberg Materials Northeast LLC
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 876
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials Northeast LLC (L16322) → Ottsville Quarry (3600036)**

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

## Controller and operator valid-time history

- **Benjamin R  Scholl → Bucks County Crushed Stone Inc:** 1950-01-01 through 1984-10-31; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.
- **Arlene E  Kraus → Bucks County Crushed Stone:** 1984-11-01 through 1998-12-14; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.
- **USS Holdings Inc → Hanson Aggregates BMC, Inc.:** 1998-12-15 through 2003-07-18; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.
- **Hanson PLC → Hanson Aggregates BMC, Inc.:** 2003-07-19 through 2007-08-22; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Hanson Aggregates BMC, Inc.:** 2007-08-23 through 2022-04-28; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials Northeast LLC:** 2022-04-29 through current/open; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.
- **Hanson PLC → Heidelberg Materials Northeast LLC:** 2022-04-29 through 2007-08-22; derived from co-tenure at mine 3600036; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 17
- 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 — 0 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 4 lost days across the published record.
2. **COMPLIANCE — 6 since 2021:** Violations and penalties 42 violation rows across the full record; 9 carry an S&S flag and $6,591 appears in current assessed amounts.
3. **HEALTH — 11 samples:** Occupational health samples 11 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 4K employee hours and 7 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 5 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 — 11 since 2021:** Inspections 56 inspection events and 603 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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.14132 — 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 56.12032 — 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 56.4500 — Heat sources.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4500
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.9315 — Dust control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9315
- **30 CFR 41.12 — Changes; notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.12
- **30 CFR 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2000-08-16 through 2015-12-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-10-08 through 2026-10-08; source ID `msha-addresses`
- **Assessed Violations:** 41 rows; 2000-08-02 through 2022-05-12; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2010-04-05 through 2010-05-26; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2008-10-17 through 2008-10-17; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2008-10-02 through 2009-09-29; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 521 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 124 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2022-04-29; source ID `msha-controller-operator-history`
- **Inspections:** 56 rows; 2000-02-28 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 39 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:** 11 rows; 2000-08-02 through 2022-05-24; source ID `msha-personal-health-samples`
- **Violations:** 42 rows; 2000-08-02 through 2022-05-12; 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/ottsville-quarry-3600036`
- JSON: `/api/v1/mines/ottsville-quarry-3600036`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3600036/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3600036/relationships`
- MCP resource: `mine://3600036/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`