# Cache Creek Quarry

- **MSHA mine ID:** 0402763
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Yolo, CA
- **Operator:** CEMEX Construction Materials Pacific, LLC
- **Controller:** Cemex S A
- **Public source rows linked:** 1,356
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Cemex S A (M09149) → CEMEX Construction Materials Pacific, LLC (0103149) → Cache Creek Quarry (0402763)**

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

## Controller and operator valid-time history

- **Billy  Yarbrough → Solano Concrete Company Inc:** 1950-01-01 through 1999-12-31; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.
- **Peter Kiewit Sons' Inc → Solano Concrete Company Inc:** 2000-01-01 through 2002-12-31; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.
- **CSR Ltd → Rinker Materials Western Inc:** 2003-01-01 through 2003-03-31; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Rinker Materials Western Inc:** 2003-04-01 through 2007-07-09; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.
- **Cemex S A → Rinker Materials Western Inc:** 2007-07-10 through 2008-07-31; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Pacific Holdings LLC:** 2008-08-01 through 2017-04-30; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials Pacific, LLC:** 2017-05-01 through current/open; derived from co-tenure at mine 0402763; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 18
- 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 — 1 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 17 lost days across the published record.
2. **COMPLIANCE — 73 since 2021:** Violations and penalties 315 violation rows across the full record; 71 carry an S&S flag and $104,265 appears in current assessed amounts.
3. **HEALTH — 43 samples:** Occupational health samples 43 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 9K employee hours and 17 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 20 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 4 civil-penalty docket/decision rows, and 13 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 30 since 2021:** Inspections 100 inspection events and 2K 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 56.12004 — 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 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.14130 — 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 56.14100 — 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12026 — Grounding transformer and switchgear enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12026
- **30 CFR 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **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
- **30 CFR 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2008-11-22 through 2022-03-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1990-02-26 through 1990-02-26; source ID `msha-addresses`
- **Assessed Violations:** 314 rows; 2000-07-19 through 2026-07-01; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2001-02-09 through 2016-01-07; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 13 rows; 2003-04-01 through 2016-09-12; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2013-01-03 through 2015-05-12; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 222 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 67 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2017-05-01; source ID `msha-controller-operator-history`
- **Inspections:** 100 rows; 2000-07-18 through 2026-07-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 208 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:** 43 rows; 2000-07-20 through 2026-03-19; source ID `msha-personal-health-samples`
- **Violations:** 315 rows; 2000-07-19 through 2026-07-01; 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/cache-creek-quarry-0402763`
- JSON: `/api/v1/mines/cache-creek-quarry-0402763`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0402763/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0402763/relationships`
- MCP resource: `mine://0402763/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`