# Hunter Cement Plant

- **MSHA mine ID:** 4102820
- **Status:** Active
- **Type / commodity:** Facility / Cement
- **Location:** Comal, TX
- **Operator:** Ash Grove Cement South Texas LLC
- **Controller:** CRH PLC
- **Public source rows linked:** 5,712
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Ash Grove Cement South Texas LLC (0187113) → Hunter Cement Plant (4102820)**

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

## Controller and operator valid-time history

- **Texas Industries Inc → TXI (A/K/A Texas Industries Inc):** 1979-01-01 through 2005-03-14; derived from co-tenure at mine 4102820; source `msha-controller-operator-history`.
- **Texas Industries Inc → TXI Operations LP:** 2005-03-15 through 2014-07-01; derived from co-tenure at mine 4102820; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → TXI Operations LP:** 2014-07-02 through 2022-12-31; derived from co-tenure at mine 4102820; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Ash Grove Cement South Texas LLC:** 2023-01-01 through 2024-10-22; derived from co-tenure at mine 4102820; source `msha-controller-operator-history`.
- **CRH PLC → Ash Grove Cement South Texas LLC:** 2024-10-23 through current/open; derived from co-tenure at mine 4102820; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 — 19 since 2021:** Accidents and injuries 159 historical accident/injury rows; 1 coded fatalities and 1,499 lost days across the published record.
2. **COMPLIANCE — 166 since 2021:** Violations and penalties 539 violation rows across the full record; 84 carry an S&S flag and $200,297 appears in current assessed amounts.
3. **HEALTH — 41 samples:** Occupational health samples 41 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 95K employee hours and 182 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 255 linked rows:** Contests, conferences and decisions 97 contested-violation rows, 97 civil-penalty docket/decision rows, and 61 conference records linked by issuance number.
6. **CONTRACTORS — 28 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 98 inspection events and 4K 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 56.13020 — Use of compressed air.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13020
- **30 CFR 56.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.12004 — 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 56.14107 — 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 56.18002 — Examination of working places.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14109
- **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 56.12008 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 159 rows; 2000-02-04 through 2026-08-06; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1980-04-15 through 1980-04-15; source ID `msha-addresses`
- **Assessed Violations:** 527 rows; 2000-04-05 through 2026-04-09; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 97 rows; 2011-05-06 through 2025-04-30; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 61 rows; 2001-10-31 through 2018-11-14; source ID `msha-conferences`
- **Contested Violations:** 97 rows; 2009-10-19 through 2026-04-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 3,016 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 671 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1979-01-01 through 2023-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 98 rows; 2000-04-05 through 2026-07-14; 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:** 41 rows; 2002-06-19 through 2024-01-10; source ID `msha-personal-health-samples`
- **Violations:** 539 rows; 2000-04-05 through 2026-04-09; 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/hunter-cement-plant-4102820`
- JSON: `/api/v1/mines/hunter-cement-plant-4102820`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4102820/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4102820/relationships`
- MCP resource: `mine://4102820/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`