# Cabazon

- **MSHA mine ID:** 0402774
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Riverside, CA
- **Operator:** Robertson's
- **Controller:** RRM Development Corporation; Mitsubishi Corp
- **Public source rows linked:** 783
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**RRM Development Corporation; Mitsubishi Corp (M11611) → Robertson's (L14361) → Cabazon (0402774)**

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

## Controller and operator valid-time history

- **Thomas L  Daniel → Beaumont Concrete Company:** 1950-01-01 through 1998-11-30; derived from co-tenure at mine 0402774; source `msha-controller-operator-history`.
- **Mitsubishi Corp  et al → Robertson's:** 1998-12-01 through current/open; derived from co-tenure at mine 0402774; source `msha-controller-operator-history`.
- **RRM Development Corporation et al → Robertson's:** 1998-12-01 through current/open; derived from co-tenure at mine 0402774; 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 4 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 717 lost days across the published record.
2. **COMPLIANCE — 10 since 2021:** Violations and penalties 232 violation rows across the full record; 83 carry an S&S flag and $64,074 appears in current assessed amounts.
3. **HEALTH — 21 samples:** Occupational health samples 21 personal. 1 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 20K employee hours and 34 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 16 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 7 civil-penalty docket/decision rows, and 2 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 — 20 since 2021:** Inspections 82 inspection events and 1K 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 56.14100 — 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 56.14130 — 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 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.4430 — Storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4430
- **30 CFR 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **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 56.12004 — 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 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **30 CFR 56.20003 — Housekeeping.** (2 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2009-01-14 through 2026-06-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1997-05-21 through 1997-05-21; source ID `msha-addresses`
- **Assessed Violations:** 227 rows; 2000-07-27 through 2025-11-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2008-05-20 through 2020-02-14; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2017-09-22 through 2023-09-20; source ID `msha-conferences`
- **Contested Violations:** 7 rows; 2007-06-26 through 2019-06-19; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 100 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 27 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1998-12-01; source ID `msha-controller-operator-history`
- **Inspections:** 82 rows; 2000-07-27 through 2026-09-23; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 21 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 37 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:** 21 rows; 2001-07-31 through 2025-09-10; source ID `msha-personal-health-samples`
- **Violations:** 232 rows; 2000-07-27 through 2025-11-25; 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/cabazon-0402774`
- JSON: `/api/v1/mines/cabazon-0402774`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0402774/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0402774/relationships`
- MCP resource: `mine://0402774/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`