# Silver Queen Mine

- **MSHA mine ID:** 0203312
- **Status:** Abandoned
- **Type / commodity:** Underground / Potassium Compounds
- **Location:** Mohave, AZ
- **Operator:** The Silver Queen Mine LLC
- **Controller:** Lucretia  Emmett; John  Emmett
- **Public source rows linked:** 217
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Lucretia  Emmett; John  Emmett (0084453) → The Silver Queen Mine LLC (0126774) → Silver Queen Mine (0203312)**

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

## Controller and operator valid-time history

- **Lucretia  Emmett et al → The Silver Queen Mine LLC:** 2013-01-10 through current/open; derived from co-tenure at mine 0203312; source `msha-controller-operator-history`.
- **John  Emmett et al → The Silver Queen Mine LLC:** 2013-01-10 through current/open; derived from co-tenure at mine 0203312; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 4
- 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 34 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 42 violation rows across the full record; 8 carry an S&S flag and $9,086 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 2K employee hours and 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 65 linked rows:** Contests, conferences and decisions 28 contested-violation rows, 28 civil-penalty docket/decision rows, and 9 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 14 inspection events and 289 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 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **30 CFR 57.4361 — Underground evacuation drills.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4361
- **30 CFR 57.15003 — Protective footwear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15003
- **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 48.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-A/section-48.9
- **30 CFR 57.13011 — Air receiver tanks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-L/section-57.13011
- **30 CFR 57.14206 — Securing movable parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14206
- **30 CFR 57.20032 — Two-way communication equipment for underground operations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20032
- **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 57.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-Q/section-57.18002
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2014-01-27 through 2014-01-27; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2016-03-17 through 2016-03-17; source ID `msha-addresses`
- **Assessed Violations:** 42 rows; 2013-04-16 through 2016-03-10; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 28 rows; 2013-09-16 through 2016-05-25; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 9 rows; 2014-04-14 through 2015-05-08; source ID `msha-conferences`
- **Contested Violations:** 28 rows; 2013-04-16 through 2015-08-13; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 2013-01-10 through 2013-01-10; source ID `msha-controller-operator-history`
- **Inspections:** 14 rows; 2013-04-16 through 2016-03-10; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 33 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 9 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; 2013-04-17 through 2015-02-05; source ID `msha-personal-health-samples`
- **Violations:** 42 rows; 2013-04-16 through 2016-03-10; 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/silver-queen-mine-0203312`
- JSON: `/api/v1/mines/silver-queen-mine-0203312`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0203312/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0203312/relationships`
- MCP resource: `mine://0203312/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`