# Divot Quarry

- **MSHA mine ID:** 4104879
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Frio, TX
- **Operator:** Texas Materials Group, Inc
- **Controller:** CRH PLC
- **Public source rows linked:** 352
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Texas Materials Group, Inc (L16618) → Divot Quarry (4104879)**

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

## Controller and operator valid-time history

- **Matthew Ward  Hanna → Pinnacle Material, Inc.:** 2011-05-02 through 2012-05-07; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **Matthew Ward  Hanna → Pinnacle Materials LLC:** 2012-05-08 through 2013-08-06; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **Charles W  Harrison Jr → Allied Custom Gypsum:** 2013-08-07 through 2013-08-08; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **Charles W  Harrison Jr → ACG Materials:** 2013-08-09 through 2015-09-30; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **H I G Capital LLC → Allied Custom Gypsum:** 2014-07-15 through 2013-08-08; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **H I G Capital LLC → ACG Materials:** 2015-10-01 through 2018-12-05; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **Arcosa, Inc → ACG Materials:** 2018-12-06 through 2021-05-10; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **Angel Brothers Holdings Corp → Century Asphalt, Ltd.:** 2021-05-11 through 2021-07-30; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **Ashland Inc → Texas Materials Group, Inc:** 2021-07-31 through 2006-08-27; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.
- **CRH PLC → Texas Materials Group, Inc:** 2021-07-31 through current/open; derived from co-tenure at mine 4104879; source `msha-controller-operator-history`.

- History rows: 10
- Typed edges: 27
- Interval anomalies: 2
- 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 — 2 since 2021:** Accidents and injuries 6 historical accident/injury rows; 0 coded fatalities and 75 lost days across the published record.
2. **COMPLIANCE — 18 since 2021:** Violations and penalties 59 violation rows across the full record; 11 carry an S&S flag and $10,866 appears in current assessed amounts.
3. **HEALTH — 10 samples:** Occupational health samples 10 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 — 2 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 14 since 2021:** Inspections 32 inspection events and 335 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 56.14112 — Construction and maintenance of guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025
- **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 56.9300 — 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 56.14107 — 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 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001

## Source coverage

- **Accident, Injuries, and Illnesses:** 6 rows; 2011-10-17 through 2022-08-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2021-05-18 through 2021-05-18; source ID `msha-addresses`
- **Assessed Violations:** 58 rows; 2011-05-02 through 2026-05-26; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2015-06-26 through 2015-06-26; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 1 rows; 2014-12-03 through 2014-12-03; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 31 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 9 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 10 rows; 2011-05-02 through 2021-07-31; source ID `msha-controller-operator-history`
- **Inspections:** 32 rows; 2011-05-02 through 2026-06-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 104 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 29 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:** 10 rows; 2019-01-08 through 2024-11-26; source ID `msha-personal-health-samples`
- **Violations:** 59 rows; 2011-05-02 through 2026-05-26; 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/divot-quarry-4104879`
- JSON: `/api/v1/mines/divot-quarry-4104879`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4104879/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4104879/relationships`
- MCP resource: `mine://4104879/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`