# shamrock

- **MSHA mine ID:** 4104758
- **Status:** Abandoned
- **Type / commodity:** Surface / Gypsum
- **Location:** Wheeler, TX
- **Operator:** L&M STONE LLC
- **Controller:** William Matthew Woodie
- **Public source rows linked:** 399
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**William Matthew Woodie (0200021) → L&M STONE LLC (0208994) → shamrock (4104758)**

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

## Controller and operator valid-time history

- **Charles W  Harrison Jr → ACG Materials:** 2008-11-14 through 2014-07-14; derived from co-tenure at mine 4104758; source `msha-controller-operator-history`.
- **H I G Capital LLC → ACG Materials:** 2014-07-15 through 2018-12-05; derived from co-tenure at mine 4104758; source `msha-controller-operator-history`.
- **Arcosa, Inc → Arcosa Specialty Materials:** 2018-12-06 through 2026-04-22; derived from co-tenure at mine 4104758; source `msha-controller-operator-history`.
- **William Matthew Woodie → L&M STONE LLC:** 2026-04-23 through current/open; derived from co-tenure at mine 4104758; 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 5 historical accident/injury rows; 1 coded fatalities and 485 lost days across the published record.
2. **COMPLIANCE — 13 since 2021:** Violations and penalties 70 violation rows across the full record; 18 carry an S&S flag and $63,568 appears in current assessed amounts.
3. **HEALTH — 13 samples:** Occupational health samples 13 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 1K employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 22 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 11 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 15 since 2021:** Inspections 48 inspection events and 757 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 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **30 CFR 41.13 — Failure to notify.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.13
- **30 CFR 56.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.18002 — 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 56.14132 — 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 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.11001 — Safe access.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2011-10-27 through 2015-10-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-08-16 through 2026-08-16; source ID `msha-addresses`
- **Assessed Violations:** 68 rows; 2009-02-10 through 2026-08-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 11 rows; 2012-02-22 through 2015-11-09; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 11 rows; 2011-01-18 through 2015-06-02; source ID `msha-contested-violations`
- **Controller and Operator History:** 4 rows; 2008-11-14 through 2026-04-23; source ID `msha-controller-operator-history`
- **Inspections:** 48 rows; 2009-02-10 through 2026-08-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 133 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 34 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:** 13 rows; 2009-02-11 through 2024-09-18; source ID `msha-personal-health-samples`
- **Violations:** 70 rows; 2009-02-10 through 2026-08-17; 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/shamrock-4104758`
- JSON: `/api/v1/mines/shamrock-4104758`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4104758/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4104758/relationships`
- MCP resource: `mine://4104758/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`