# Sherwin Alumina, L.P.

- **MSHA mine ID:** 4100906
- **Status:** Abandoned
- **Type / commodity:** Facility / Alumina
- **Location:** San Patricio, TX
- **Operator:** Sherwin Alumina Company, LLC
- **Controller:** Sherwin Alumina LLC
- **Public source rows linked:** 14,617
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Sherwin Alumina LLC (0083673) → Sherwin Alumina Company, LLC (L18185) → Sherwin Alumina, L.P. (4100906)**

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

## Controller and operator valid-time history

- **Reynolds Metals Company → Reynolds Metals Company:** 1950-01-01 through 2000-12-31; derived from co-tenure at mine 4100906; source `msha-controller-operator-history`.
- **BPU Reynolds Inc → Sherwin Alumina Company, LLC:** 2001-01-01 through 2004-04-18; derived from co-tenure at mine 4100906; source `msha-controller-operator-history`.
- **BPU Associates et al → Sherwin Alumina Company, LLC:** 2004-04-19 through 2007-08-22; derived from co-tenure at mine 4100906; source `msha-controller-operator-history`.
- **China Minmetals et al → Sherwin Alumina Company, LLC:** 2004-04-19 through 2007-08-22; derived from co-tenure at mine 4100906; source `msha-controller-operator-history`.
- **Glencore International A G → Sherwin Alumina Company, LLC:** 2007-08-23 through 2009-03-19; derived from co-tenure at mine 4100906; source `msha-controller-operator-history`.
- **Sherwin Alumina LLC → Sherwin Alumina Company, LLC:** 2009-03-20 through current/open; derived from co-tenure at mine 4100906; source `msha-controller-operator-history`.

- History rows: 6
- 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 — 0 since 2021:** Accidents and injuries 802 historical accident/injury rows; 3 coded fatalities and 13,237 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 2,551 violation rows across the full record; 585 carry an S&S flag and $2,381,708 appears in current assessed amounts.
3. **HEALTH — 322 samples:** Occupational health samples 300 personal; 22 area. 3 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 338K employee hours and 455 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2,149 linked rows:** Contests, conferences and decisions 925 contested-violation rows, 931 civil-penalty docket/decision rows, and 293 conference records linked by issuance number.
6. **CONTRACTORS — 55 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 432 inspection events and 17K 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 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **30 CFR 56.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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
- **30 CFR 56.14211 — Blocking equipment in a raised position.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14211
- **30 CFR 48.28 — Annual refresher training of miners; minimum courses of instruction; hours of instruction.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.28
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **30 CFR 56.20013 — Waste receptacles.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20013

## Source coverage

- **Accident, Injuries, and Illnesses:** 802 rows; 2000-01-04 through 2016-08-14; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2016-10-12 through 2016-10-12; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 22 rows; 2014-06-10 through 2015-12-29; source ID `msha-area-samples`
- **Assessed Violations:** 2,502 rows; 2000-01-25 through 2017-01-23; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 931 rows; 2002-10-16 through 2017-11-15; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 293 rows; 2000-02-16 through 2016-10-13; source ID `msha-conferences`
- **Contested Violations:** 925 rows; 2004-12-22 through 2016-09-14; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 4,609 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,076 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1950-01-01 through 2001-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 432 rows; 2000-01-25 through 2017-01-23; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 132 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:** 300 rows; 2000-11-15 through 2016-05-05; source ID `msha-personal-health-samples`
- **Violations:** 2,551 rows; 2000-01-25 through 2017-01-23; 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/sherwin-alumina-l-p-4100906`
- JSON: `/api/v1/mines/sherwin-alumina-l-p-4100906`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4100906/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4100906/relationships`
- MCP resource: `mine://4100906/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`