# Willow Creek Portable Crusher

- **MSHA mine ID:** 0402767
- **Status:** Intermittent
- **Type / commodity:** Surface / Dimension Stone NEC
- **Location:** Humboldt, CA
- **Operator:** Mercer, Fraser Company
- **Controller:** Ted E  Contri; Ted E  Contri
- **Public source rows linked:** 366
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Ted E  Contri; Ted E  Contri (0041008) → Mercer, Fraser Company (L00782) → Willow Creek Portable Crusher (0402767)**

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

## Controller and operator valid-time history

- **Bott William F → Mercer, Fraser Company:** 1950-01-01 through 2002-01-15; derived from co-tenure at mine 0402767; source `msha-controller-operator-history`.
- **Ted E  Contri  et al → Mercer, Fraser Company:** 2002-01-16 through current/open; derived from co-tenure at mine 0402767; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 25 since 2021:** Violations and penalties 120 violation rows across the full record; 38 carry an S&S flag and $35,540 appears in current assessed amounts.
3. **HEALTH — 7 samples:** Occupational health samples 7 personal. 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 113 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 33 linked rows:** Contests, conferences and decisions 16 contested-violation rows, 17 civil-penalty docket/decision rows, and 0 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 — 11 since 2021:** Inspections 41 inspection events and 601 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 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.11006 — Fixed ladder landings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11006
- **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 56.14100 — 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 56.11004 — Portable rigid ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11004

## Source coverage

- **Addresses of Record:** 1 rows; 2025-01-01 through 2025-01-01; source ID `msha-addresses`
- **Assessed Violations:** 120 rows; 2000-05-09 through 2025-12-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 17 rows; 2004-05-14 through 2016-02-17; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 16 rows; 2010-08-31 through 2015-08-05; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 41 rows; 2000-05-09 through 2025-12-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 12 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 29 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:** 7 rows; 2009-07-13 through 2023-06-21; source ID `msha-personal-health-samples`
- **Violations:** 120 rows; 2000-05-09 through 2025-12-16; 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/willow-creek-portable-crusher-0402767`
- JSON: `/api/v1/mines/willow-creek-portable-crusher-0402767`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0402767/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0402767/relationships`
- MCP resource: `mine://0402767/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`