# Blue Streak Mine

- **MSHA mine ID:** 0503534
- **Status:** Abandoned
- **Type / commodity:** Underground / Uranium-Vanadium Ore
- **Location:** Montrose, CO
- **Operator:** Nuvemco LLC
- **Controller:** EMSU LLC
- **Public source rows linked:** 79
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**EMSU LLC (0068011) → Nuvemco LLC (0080804) → Blue Streak Mine (0503534)**

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

## Controller and operator valid-time history

- **Wyoming Fuel Company → Wyoming Fuel Company:** 1980-02-01 through 1981-02-03; derived from co-tenure at mine 0503534; source `msha-controller-operator-history`.
- **Mendisco Felix → F & F Mining Company:** 1981-02-04 through 1998-12-01; derived from co-tenure at mine 0503534; source `msha-controller-operator-history`.
- **Mitch  Hopkins  et al → H & H Mining:** 1998-12-02 through 2008-01-15; derived from co-tenure at mine 0503534; source `msha-controller-operator-history`.
- **Ed  Hopkins  et al → H & H Mining:** 1998-12-02 through 2008-01-15; derived from co-tenure at mine 0503534; source `msha-controller-operator-history`.
- **EMSU LLC et al → Nuvemco LLC:** 2008-01-16 through current/open; derived from co-tenure at mine 0503534; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 1 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 18 violation rows across the full record; 3 carry an S&S flag and $9,360 appears in current assessed amounts.
3. **HEALTH — 3 samples:** Occupational health samples 3 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 1K employee hours and 9 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 18 linked rows:** Contests, conferences and decisions 9 contested-violation rows, 9 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 5 inspection events and 268 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 57.5044 — Respirators.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-D/section-57.5044
- **30 CFR 57.14132 — Horns and backup alarms for surface equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14132
- **30 CFR 57.14131 — Seat belts for surface haulage trucks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14131
- **30 CFR 57.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100
- **30 CFR 57.4230 — Surface self-propelled equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4230
- **30 CFR 57.12013 — Splices and repairs of power cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12013
- **30 CFR 57.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12028
- **30 CFR 57.5039 — Maximum permissible concentration.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-D/section-57.5039
- **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 57.5067 — Engines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-D/section-57.5067

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2009-02-23 through 2009-02-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-04-27 through 2009-04-27; source ID `msha-addresses`
- **Assessed Violations:** 18 rows; 2009-02-24 through 2009-04-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 9 rows; 2010-06-23 through 2010-11-17; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 9 rows; 2009-04-08 through 2009-04-16; source ID `msha-contested-violations`
- **Controller and Operator History:** 5 rows; 1980-02-01 through 2008-01-16; source ID `msha-controller-operator-history`
- **Inspections:** 5 rows; 2009-02-23 through 2009-04-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 6 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:** 3 rows; 2009-04-15 through 2009-04-15; source ID `msha-personal-health-samples`
- **Violations:** 18 rows; 2009-02-24 through 2009-04-16; 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/blue-streak-mine-0503534`
- JSON: `/api/v1/mines/blue-streak-mine-0503534`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0503534/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0503534/relationships`
- MCP resource: `mine://0503534/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`