# Eliot Plant

- **MSHA mine ID:** 0401891
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Alameda, CA
- **Operator:** CEMEX Construction Materials Pacific, LLC
- **Controller:** Cemex S A
- **Public source rows linked:** 3,798
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Cemex S A (M09149) → CEMEX Construction Materials Pacific, LLC (0103149) → Eliot Plant (0401891)**

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

## Controller and operator valid-time history

- **Lone Star Industries Inc → Lone Star Industries Inc:** 1950-01-01 through 1987-12-31; derived from co-tenure at mine 0401891; source `msha-controller-operator-history`.
- **RMC Group PLC → CEMEX:** 1988-01-01 through 2005-02-28; derived from co-tenure at mine 0401891; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX:** 2005-03-01 through 2006-11-30; derived from co-tenure at mine 0401891; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Construction Materials LP:** 2006-12-01 through 2012-06-05; derived from co-tenure at mine 0401891; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials Pacific, LLC:** 2012-06-06 through current/open; derived from co-tenure at mine 0401891; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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 43 historical accident/injury rows; 0 coded fatalities and 438 lost days across the published record.
2. **COMPLIANCE — 84 since 2021:** Violations and penalties 541 violation rows across the full record; 137 carry an S&S flag and $355,937 appears in current assessed amounts.
3. **HEALTH — 28 samples:** Occupational health samples 28 personal. 2 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 25K employee hours and 48 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 144 linked rows:** Contests, conferences and decisions 54 contested-violation rows, 58 civil-penalty docket/decision rows, and 32 conference records linked by issuance number.
6. **CONTRACTORS — 22 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 — 34 since 2021:** Inspections 135 inspection events and 3K 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 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 56.12018 — 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 56.20003 — 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 56.14107 — 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 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14109
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41

## Source coverage

- **Accident, Injuries, and Illnesses:** 43 rows; 2000-05-12 through 2020-08-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1973-06-27 through 1973-06-27; source ID `msha-addresses`
- **Assessed Violations:** 528 rows; 2000-05-18 through 2026-04-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 58 rows; 2012-01-26 through 2024-03-28; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 32 rows; 2004-12-02 through 2014-10-23; source ID `msha-conferences`
- **Contested Violations:** 54 rows; 2010-10-15 through 2022-11-17; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,888 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 406 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2012-06-06; source ID `msha-controller-operator-history`
- **Inspections:** 135 rows; 2000-05-18 through 2026-07-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 28 rows; 2001-04-05 through 2026-04-17; source ID `msha-personal-health-samples`
- **Violations:** 541 rows; 2000-05-18 through 2026-04-17; 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/eliot-plant-0401891`
- JSON: `/api/v1/mines/eliot-plant-0401891`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0401891/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0401891/relationships`
- MCP resource: `mine://0401891/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`