# 1604 QUARRY & PLANT

- **MSHA mine ID:** 4103019
- **Status:** Active
- **Type / commodity:** Facility / Cement
- **Location:** Bexar, TX
- **Operator:** Alamo Cement Company
- **Controller:** Buzzi S p A
- **Public source rows linked:** 5,395
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Buzzi S p A (M06982) → Alamo Cement Company (0116045) → 1604 QUARRY & PLANT (4103019)**

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

## Controller and operator valid-time history

- **Buzzi S p A → Alamo Cement Company Ltd:** 1980-06-01 through 2010-12-31; derived from co-tenure at mine 4103019; source `msha-controller-operator-history`.
- **Buzzi S p A → Alamo Cement Company:** 2011-01-01 through current/open; derived from co-tenure at mine 4103019; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 — 20 since 2021:** Accidents and injuries 155 historical accident/injury rows; 0 coded fatalities and 1,488 lost days across the published record.
2. **COMPLIANCE — 70 since 2021:** Violations and penalties 378 violation rows across the full record; 58 carry an S&S flag and $108,859 appears in current assessed amounts.
3. **HEALTH — 16 samples:** Occupational health samples 16 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 59K employee hours and 146 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 195 linked rows:** Contests, conferences and decisions 72 contested-violation rows, 79 civil-penalty docket/decision rows, and 44 conference records linked by issuance number.
6. **CONTRACTORS — 23 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 — 25 since 2021:** Inspections 111 inspection events and 3K 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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **30 CFR 56.15005 — Safety belts and lines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15005
- **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 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **30 CFR 56.15004 — Eye protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15004
- **30 CFR 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.13021 — High-pressure hose connections.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13021
- **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 56.11010 — Stairstep clearance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11010

## Source coverage

- **Accident, Injuries, and Illnesses:** 155 rows; 2000-02-16 through 2026-06-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1986-09-24 through 1986-09-24; source ID `msha-addresses`
- **Assessed Violations:** 373 rows; 2000-06-26 through 2026-05-14; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 79 rows; 2002-10-24 through 2025-04-03; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 44 rows; 2001-08-28 through 2025-12-23; source ID `msha-conferences`
- **Contested Violations:** 72 rows; 2004-09-22 through 2024-09-05; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 3,047 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 717 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1980-06-01 through 2011-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 111 rows; 2000-06-26 through 2026-05-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 16 rows; 2009-08-05 through 2025-09-03; source ID `msha-personal-health-samples`
- **Violations:** 378 rows; 2000-06-26 through 2026-05-14; 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/1604-quarry-plant-4103019`
- JSON: `/api/v1/mines/1604-quarry-plant-4103019`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4103019/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4103019/relationships`
- MCP resource: `mine://4103019/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`