# St. Croix Alumina, LLC

- **MSHA mine ID:** 5500005
- **Status:** Abandoned
- **Type / commodity:** Surface / Alumina
- **Location:** St Croix, VI
- **Operator:** St. Croix Alumina, LLC
- **Controller:** Alcoa Inc; Western Mining Corp Holdings Ltd
- **Public source rows linked:** 65
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Alcoa Inc; Western Mining Corp Holdings Ltd (M12356) → St. Croix Alumina, LLC (L14814) → St. Croix Alumina, LLC (5500005)**

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

## Controller and operator valid-time history

- **Martin Marietta Materials Inc → Martin Marietta Alumina:** 1950-01-01 through 1989-07-12; derived from co-tenure at mine 5500005; source `msha-controller-operator-history`.
- **Clarendon → Virgin Islands Alumina Corp:** 1989-07-13 through 1995-07-24; derived from co-tenure at mine 5500005; source `msha-controller-operator-history`.
- **Alcoa Inc  et al → St. Croix Alumina, LLC:** 1995-07-25 through current/open; derived from co-tenure at mine 5500005; source `msha-controller-operator-history`.
- **Western Mining Corp Holdings Ltd  et al → St. Croix Alumina, LLC:** 1995-07-25 through current/open; derived from co-tenure at mine 5500005; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 10
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 11 historical accident/injury rows; 0 coded fatalities and 138 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 10 violation rows across the full record; 7 carry an S&S flag and $3,131 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 8K employee hours and 16 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 2 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 — 0 since 2021:** Inspections 8 inspection events and 162 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 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — 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 56.11001 — 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 56.17001 — Illumination of surface working areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-P/section-56.17001
- **30 CFR 56.15020 — Life jackets and belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15020

## Source coverage

- **Accident, Injuries, and Illnesses:** 11 rows; 2000-01-27 through 2001-01-22; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2002-07-17 through 2002-07-17; source ID `msha-addresses`
- **Assessed Violations:** 10 rows; 2000-01-11 through 2000-10-19; source ID `msha-assessed-violations`
- **Conferences:** 2 rows; 2000-02-03 through 2000-02-03; source ID `msha-conferences`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 1995-07-25; source ID `msha-controller-operator-history`
- **Inspections:** 8 rows; 2000-01-10 through 2001-01-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 14 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 4 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 10 rows; 2000-01-11 through 2000-10-19; 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/st-croix-alumina-llc-5500005`
- JSON: `/api/v1/mines/st-croix-alumina-llc-5500005`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/5500005/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/5500005/relationships`
- MCP resource: `mine://5500005/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`