# Lehigh Permanente Quarry

- **MSHA mine ID:** 0400158
- **Status:** Abandoned
- **Type / commodity:** Surface / Cement
- **Location:** Santa Clara, CA
- **Operator:** Lehigh Southwest Cement Co.
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 2,768
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Lehigh Southwest Cement Co. (L16900) → Lehigh Permanente Quarry (0400158)**

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

## Controller and operator valid-time history

- **Kaiser Cement Corp → Kaiser Cement Corp:** 1950-01-01 through 1987-03-02; derived from co-tenure at mine 0400158; source `msha-controller-operator-history`.
- **Hanson PLC → Hanson Permanente Cement Inc:** 1987-03-03 through 2007-08-22; derived from co-tenure at mine 0400158; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Hanson Permanente Cement Inc:** 2007-08-23 through 2008-06-30; derived from co-tenure at mine 0400158; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Lehigh Southwest Cement Co.:** 2008-07-01 through current/open; derived from co-tenure at mine 0400158; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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 — 0 since 2021:** Accidents and injuries 60 historical accident/injury rows; 0 coded fatalities and 918 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 277 violation rows across the full record; 64 carry an S&S flag and $81,695 appears in current assessed amounts.
3. **HEALTH — 35 samples:** Occupational health samples 35 personal. 1 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 45K employee hours and 80 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 179 linked rows:** Contests, conferences and decisions 85 contested-violation rows, 86 civil-penalty docket/decision rows, and 8 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 — 0 since 2021:** Inspections 56 inspection events and 2K 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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (6 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.12018 — Identification of power switches.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.4230 — Self-propelled equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4230
- **30 CFR 56.12067 — Installation of transformers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12067
- **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 56.14207 — 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:** 60 rows; 2000-01-25 through 2020-02-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-03-31 through 2013-03-31; source ID `msha-addresses`
- **Assessed Violations:** 268 rows; 2000-07-26 through 2013-03-14; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 86 rows; 2004-10-18 through 2013-07-24; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 8 rows; 2003-10-15 through 2012-06-20; source ID `msha-conferences`
- **Contested Violations:** 85 rows; 2007-03-28 through 2013-03-14; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,456 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 379 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 2008-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 56 rows; 2000-07-26 through 2013-03-05; 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:** 28 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:** 35 rows; 2001-07-23 through 2012-06-14; source ID `msha-personal-health-samples`
- **Violations:** 277 rows; 2000-07-26 through 2013-03-14; 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/lehigh-permanente-quarry-0400158`
- JSON: `/api/v1/mines/lehigh-permanente-quarry-0400158`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0400158/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0400158/relationships`
- MCP resource: `mine://0400158/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`