# Washougal Aggregates

- **MSHA mine ID:** 4502605
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Clark, WA
- **Operator:** Pacific Rock Products LLC
- **Controller:** Cemex S A
- **Public source rows linked:** 66
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Cemex S A (M09149) → Pacific Rock Products LLC (0051582) → Washougal Aggregates (4502605)**

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

## Controller and operator valid-time history

- **David  Zimmerly → Zimmerly Rock Products:** 1978-03-09 through 1997-06-15; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **CSR Ltd → Csr America:** 1997-06-16 through 2001-09-30; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **CSR Ltd → Rinker Materials:** 2001-10-01 through 2003-03-31; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Rinker Materials:** 2003-04-01 through 2007-07-09; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Csr America:** 2003-04-01 through 2001-09-30; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **Cemex S A → Rinker Materials:** 2007-07-10 through 2007-07-31; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Pacific Rock Products LLC:** 2007-08-01 through 2007-07-09; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **CSR Ltd → Pacific Rock Products LLC:** 2007-08-01 through 2003-03-31; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.
- **Cemex S A → Pacific Rock Products LLC:** 2007-08-01 through current/open; derived from co-tenure at mine 4502605; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 20
- Interval anomalies: 3
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 17 violation rows across the full record; 0 carry an S&S flag and $935 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 8 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 3 inspection events and 117 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 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **30 CFR 50.11 — Investigation.** (8 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-B/section-50.11
- **30 CFR 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20

## Source coverage

- **Addresses of Record:** 1 rows; 2001-09-09 through 2001-09-09; source ID `msha-addresses`
- **Assessed Violations:** 17 rows; 2000-01-12 through 2000-08-09; source ID `msha-assessed-violations`
- **Conferences:** 8 rows; 2000-02-22 through 2000-02-22; source ID `msha-conferences`
- **Controller and Operator History:** 9 rows; 1978-03-09 through 2007-08-01; source ID `msha-controller-operator-history`
- **Inspections:** 3 rows; 2000-01-10 through 2001-09-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 8 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 2 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 17 rows; 2000-01-12 through 2000-08-09; 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/washougal-aggregates-4502605`
- JSON: `/api/v1/mines/washougal-aggregates-4502605`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4502605/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4502605/relationships`
- MCP resource: `mine://4502605/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`