# West Sunday

- **MSHA mine ID:** 0503780
- **Status:** Abandoned
- **Type / commodity:** Underground / Uranium Ore
- **Location:** San Miguel, CO
- **Operator:** Pinon Ridge Mining LLC
- **Controller:** George  Glasier
- **Public source rows linked:** 278
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**George  Glasier (0147541) → Pinon Ridge Mining LLC (0163433) → West Sunday (0503780)**

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

## Controller and operator valid-time history

- **Union Carbide Corp → Tomcat Mining Corporation:** 1982-06-01 through 2006-12-03; derived from co-tenure at mine 0503780; source `msha-controller-operator-history`.
- **International Uranium Corp → Energy Fuels Resources (USA) Inc.:** 2006-12-04 through 2019-04-29; derived from co-tenure at mine 0503780; source `msha-controller-operator-history`.
- **George  Glasier → Pinon Ridge Mining LLC:** 2019-04-30 through current/open; derived from co-tenure at mine 0503780; source `msha-controller-operator-history`.
- **Energy Fuels Inc → Energy Fuels Resources (USA) Inc.:** 2023-02-13 through 2019-04-29; derived from co-tenure at mine 0503780; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- Interval anomalies: 1
- 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 24 violation rows across the full record; 6 carry an S&S flag and $3,494 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 personal. 5 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 196 employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 41 linked rows:** Contests, conferences and decisions 20 contested-violation rows, 20 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 5 inspection events and 102 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 57.5060 — Limit on exposure to diesel particulate matter.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-D/section-57.5060
- **30 CFR 57.15030 — Provision and maintenance of self-rescue devices.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15030
- **30 CFR 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130
- **30 CFR 57.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.14130 — Roll-over protective structures (ROPS) and seat belts for surface equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14130
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11012
- **30 CFR 57.8520 — Ventilation plan.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-G/section-57.8520
- **30 CFR 49.2 — Availability of mine rescue teams.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-49/subpart-A/section-49.2

## Source coverage

- **Addresses of Record:** 1 rows; 2008-04-01 through 2008-04-01; source ID `msha-addresses`
- **Assessed Violations:** 24 rows; 2007-12-11 through 2008-03-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 20 rows; 2009-04-09 through 2010-11-24; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2008-01-31 through 2008-01-31; source ID `msha-conferences`
- **Contested Violations:** 20 rows; 2007-12-11 through 2008-02-22; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 140 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 16 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1982-06-01 through 2019-04-30; source ID `msha-controller-operator-history`
- **Inspections:** 5 rows; 2007-12-10 through 2008-03-12; 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:** 2 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:** 8 rows; 2008-02-21 through 2008-02-21; source ID `msha-personal-health-samples`
- **Violations:** 24 rows; 2007-12-11 through 2008-03-24; 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/west-sunday-0503780`
- JSON: `/api/v1/mines/west-sunday-0503780`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0503780/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0503780/relationships`
- MCP resource: `mine://0503780/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`