# Rim Mine

- **MSHA mine ID:** 4200472
- **Status:** Abandoned
- **Type / commodity:** Underground / Uranium Ore
- **Location:** San Juan, UT
- **Operator:** CUR Sage Plain Uranium LLC
- **Controller:** Consolidated Uranium Inc
- **Public source rows linked:** 112
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Consolidated Uranium Inc (0174240) → CUR Sage Plain Uranium LLC (0186954) → Rim Mine (4200472)**

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

## Controller and operator valid-time history

- **Mendisco Felix → F & F Mendisco Mining Company:** 1950-01-01 through 1981-11-02; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **Atlas Corp → Atlas Minerals:** 1981-11-03 through 1989-04-10; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **Reams John → Reams Construction Company:** 1989-04-11 through 1992-01-01; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **Union Carbide Corp → Umetco Minerals Corp:** 1992-01-02 through 1998-01-15; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **Butt Jim C → Jim C Butt:** 1998-01-16 through 2005-12-22; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **International Uranium Corp → Energy Fuels Resources (USA) Inc.:** 2005-12-23 through 2022-10-20; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **Consolidated Uranium Inc → CUR Sage Plain Uranium LLC:** 2022-10-21 through current/open; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.
- **Energy Fuels Inc → Energy Fuels Resources (USA) Inc.:** 2023-02-13 through 2022-10-20; derived from co-tenure at mine 4200472; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 23
- 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 3 historical accident/injury rows; 0 coded fatalities and 2 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 15 violation rows across the full record; 5 carry an S&S flag and $2,187 appears in current assessed amounts.
3. **HEALTH — 26 samples:** Occupational health samples 26 personal. 9 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 30 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 14 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 7 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 — 0 since 2021:** Inspections 8 inspection events and 236 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 57.5002 — Exposure monitoring.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-D/section-57.5002
- **30 CFR 57.6306 — Loading, blasting, and security.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-E/section-57.6306
- **30 CFR 57.6131 — Location of explosive material storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-E/section-57.6131
- **30 CFR 57.11051 — Escape routes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11051
- **30 CFR 57.12026 — Grounding transformer and switchgear enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12026
- **30 CFR 57.12021 — Danger signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12021
- **30 CFR 57.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12002
- **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 62.130 — Permissible exposure level.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2008-01-09 through 2009-04-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-09-03 through 2009-09-03; source ID `msha-addresses`
- **Assessed Violations:** 15 rows; 2008-03-25 through 2009-02-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2010-05-20 through 2010-05-20; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 7 rows; 2009-02-25 through 2009-02-25; source ID `msha-contested-violations`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2022-10-21; source ID `msha-controller-operator-history`
- **Inspections:** 8 rows; 2008-03-24 through 2017-08-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 18 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 3 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:** 26 rows; 2008-04-02 through 2009-02-25; source ID `msha-personal-health-samples`
- **Violations:** 15 rows; 2008-03-25 through 2009-02-25; 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/rim-mine-4200472`
- JSON: `/api/v1/mines/rim-mine-4200472`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4200472/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4200472/relationships`
- MCP resource: `mine://4200472/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`