# West Pittsburgh Quarry

- **MSHA mine ID:** 3603441
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Lawrence, PA
- **Operator:** Newgate Devel. Corp.
- **Controller:** Thomas K  Lampert
- **Public source rows linked:** 698
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Thomas K  Lampert (0047389) → Newgate Devel. Corp. (0056958) → West Pittsburgh Quarry (3603441)**

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

## Controller and operator valid-time history

- **Vanport Stone Inc → Vanport Stone Inc:** 1950-01-01 through 1984-06-12; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.
- **Kenlar Construction Supply Company Inc → Kenlar Construction Supply Company Inc:** 1984-06-13 through 1987-04-14; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.
- **Victor  Mashuda → C & C Vanport Limestone Plant #2 Inc:** 1987-04-15 through 1990-05-31; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.
- **Medusa Corp → Medusa Aggregates Company:** 1990-06-01 through 1998-05-14; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.
- **Southdown Inc → Southdown Inc:** 1998-05-15 through 2001-02-27; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Inc:** 2001-02-28 through 2004-02-29; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.
- **Thomas K  Lampert → Newgate Devel. Corp.:** 2004-03-01 through current/open; derived from co-tenure at mine 3603441; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 21
- 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 — 0 since 2021:** Accidents and injuries 4 historical accident/injury rows; 1 coded fatalities and 26 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 45 violation rows across the full record; 15 carry an S&S flag and $34,450 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 10 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 6 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 16 inspection events and 463 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 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **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 56.14100 — Safety defects; examination, correction and records.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **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 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **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 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.13011 — Air receiver tanks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13011

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2000-09-06 through 2008-02-18; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-03-14 through 2008-03-14; source ID `msha-addresses`
- **Assessed Violations:** 41 rows; 2000-03-02 through 2007-06-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2006-11-01 through 2006-11-01; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 3 rows; 2005-09-13 through 2005-09-16; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 442 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 105 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2004-03-01; source ID `msha-controller-operator-history`
- **Inspections:** 16 rows; 2000-03-02 through 2007-12-10; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 21 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 7 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:** 2 rows; 2005-08-23 through 2005-08-23; source ID `msha-personal-health-samples`
- **Violations:** 45 rows; 2000-03-02 through 2007-06-07; 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/west-pittsburgh-quarry-3603441`
- JSON: `/api/v1/mines/west-pittsburgh-quarry-3603441`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3603441/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3603441/relationships`
- MCP resource: `mine://3603441/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`