# Willow Creek Mine

- **MSHA mine ID:** 4202113
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Carbon, UT
- **Operator:** Plateau Mining Corporation
- **Controller:** Rag Aktiengesellschaft
- **Public source rows linked:** 1,425
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Rag Aktiengesellschaft (C15532) → Plateau Mining Corporation (P24262) → Willow Creek Mine (4202113)**

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

## Controller and operator valid-time history

- **Cyprus Amax Minerals Company → Cyprus Plateau Mining Corp:** 1995-06-01 through 1999-06-29; derived from co-tenure at mine 4202113; source `msha-controller-operator-history`.
- **Rag Aktiengesellschaft → Plateau Mining Corp:** 1999-06-30 through 2001-07-31; derived from co-tenure at mine 4202113; source `msha-controller-operator-history`.
- **Mueller Industries Inc → Amwest Exploration Company:** 2001-08-01 through 2002-02-13; derived from co-tenure at mine 4202113; source `msha-controller-operator-history`.
- **Rag Aktiengesellschaft → Plateau Mining Corporation:** 2002-02-14 through current/open; derived from co-tenure at mine 4202113; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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 — 0 since 2021:** Accidents and injuries 44 historical accident/injury rows; 2 coded fatalities and 210 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 270 violation rows across the full record; 194 carry an S&S flag and $81,607 appears in current assessed amounts.
3. **HEALTH — 294 samples:** Occupational health samples 282 coal dust; 12 coal quartz. 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 1K employee hours and 30 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 50 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 17 civil-penalty docket/decision rows, and 33 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 181 inspection events and 8K 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 75.370 — Mine ventilation plan; submission and approval.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370
- **30 CFR 77.403 — Mobile equipment; falling object protective structures (FOPS).** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.403
- **30 CFR 77.512 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.512
- **30 CFR 75.400 — Accumulation of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **30 CFR 75.364 — Weekly examination.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.364
- **30 CFR 75.334 — Worked-out areas and areas where pillars are being recovered.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.334
- **30 CFR 75.1725 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1725

## Source coverage

- **Accident, Injuries, and Illnesses:** 44 rows; 2000-01-09 through 2002-04-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2003-08-06 through 2003-08-06; source ID `msha-addresses`
- **Assessed Violations:** 251 rows; 2000-01-04 through 2003-07-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 17 rows; 2000-07-24 through 2003-12-22; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 282 rows; 2000-01-04 through 2000-07-25; source ID `msha-coal-dust-samples`
- **Conferences:** 33 rows; 2000-02-16 through 2003-12-12; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 248 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 34 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1995-06-01 through 2002-02-14; source ID `msha-controller-operator-history`
- **Inspections:** 181 rows; 2000-01-03 through 2003-07-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 37 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 10 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Quartz Samples — Coal:** 12 rows; 2000-01-06 through 2000-06-01; source ID `msha-quartz-samples`
- **Violations:** 270 rows; 2000-01-04 through 2003-07-25; 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/willow-creek-mine-4202113`
- JSON: `/api/v1/mines/willow-creek-mine-4202113`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4202113/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4202113/relationships`
- MCP resource: `mine://4202113/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`