# Alpine Plant

- **MSHA mine ID:** 4104009
- **Status:** Abandoned
- **Type / commodity:** Surface / Bentonite
- **Location:** Brewster, TX
- **Operator:** U S Clay L P
- **Controller:** Schlumberger Ltd
- **Public source rows linked:** 207
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Schlumberger Ltd (M10297) → U S Clay L P (0050909) → Alpine Plant (4104009)**

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

## Controller and operator valid-time history

- **Stanley  Graves et al → U S Clay L P:** 1998-06-01 through 2002-04-25; derived from co-tenure at mine 4104009; source `msha-controller-operator-history`.
- **Wesley  Burkett et al → U S Clay L P:** 1998-06-01 through 2002-04-25; derived from co-tenure at mine 4104009; source `msha-controller-operator-history`.
- **Schlumberger Ltd → U S Clay L P:** 2002-04-26 through current/open; derived from co-tenure at mine 4104009; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 7
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 49 violation rows across the full record; 23 carry an S&S flag and $8,594 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 700 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1 linked rows:** Contests, conferences and decisions 0 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 — 0 since 2021:** Inspections 16 inspection events and 288 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 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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 56.4200 — 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 56.14132 — 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 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **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 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.13021 — High-pressure hose connections.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13021
- **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

- **Addresses of Record:** 1 rows; 2011-02-10 through 2011-02-10; source ID `msha-addresses`
- **Assessed Violations:** 48 rows; 2000-02-29 through 2007-06-26; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2001-09-24 through 2001-09-24; source ID `msha-civil-penalty-dockets-decisions`
- **Contractor Employment and Production — Quarterly:** 19 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 2 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1998-06-01 through 2002-04-26; source ID `msha-controller-operator-history`
- **Inspections:** 16 rows; 2000-02-29 through 2010-02-03; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 50 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 17 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 49 rows; 2000-02-29 through 2007-06-26; 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/alpine-plant-4104009`
- JSON: `/api/v1/mines/alpine-plant-4104009`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4104009/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4104009/relationships`
- MCP resource: `mine://4104009/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`