# UZ

- **MSHA mine ID:** 1518469
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Letcher, KY
- **Operator:** Smoky Quartz
- **Controller:** John T  Quintrell
- **Public source rows linked:** 3,932
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**John T  Quintrell (0150681) → Smoky Quartz (0177913) → UZ (1518469)**

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

## Controller and operator valid-time history

- **Michael K  Cook et al → Cook and Sons Mining, Inc.:** 2001-10-25 through 2004-04-25; derived from co-tenure at mine 1518469; source `msha-controller-operator-history`.
- **Randy A  Cook et al → Cook and Sons Mining, Inc.:** 2001-10-25 through 2004-04-25; derived from co-tenure at mine 1518469; source `msha-controller-operator-history`.
- **Kenneth L  Stacy → Coal Extraction LLC:** 2004-04-26 through 2004-11-14; derived from co-tenure at mine 1518469; source `msha-controller-operator-history`.
- **United  Company → Sapphire Coal Company:** 2004-11-15 through 2009-04-29; derived from co-tenure at mine 1518469; source `msha-controller-operator-history`.
- **Metinvest B V → Sapphire Coal Company:** 2009-04-30 through 2021-08-05; derived from co-tenure at mine 1518469; source `msha-controller-operator-history`.
- **John T  Quintrell → Smoky Quartz:** 2021-08-06 through current/open; derived from co-tenure at mine 1518469; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 15
- 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 78 historical accident/injury rows; 0 coded fatalities and 1,021 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 854 violation rows across the full record; 315 carry an S&S flag and $349,603 appears in current assessed amounts.
3. **HEALTH — 1K samples:** Occupational health samples 1,103 coal dust; 98 coal quartz; 78 noise. 0 personal-sample rows have a published C/E ratio above 1; 15 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 189 linked rows:** Contests, conferences and decisions 90 contested-violation rows, 90 civil-penalty docket/decision rows, and 9 conference records linked by issuance number.
6. **CONTRACTORS — 10 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 97 inspection events and 7K 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 75.202 — Protection from falls of roof, face and ribs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 75.312 — Main mine fan examinations and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.312
- **30 CFR 75.364 — Weekly examination.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.364
- **30 CFR 77.1710 — Protective clothing; requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1710
- **30 CFR 75.360 — Preshift examination at fixed intervals.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.360
- **30 CFR 75.507 — Power connection points.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.507
- **30 CFR 75.1002 — Installation of electric equipment and conductors; permissibility.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-K/section-75.1002
- **30 CFR 75.372 — Mine ventilation map.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.372

## Source coverage

- **Accident, Injuries, and Illnesses:** 78 rows; 2002-08-20 through 2008-10-21; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2022-10-28 through 2022-10-28; source ID `msha-addresses`
- **Assessed Violations:** 837 rows; 2001-12-12 through 2009-02-23; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 90 rows; 2008-01-30 through 2011-07-20; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 1,103 rows; 2002-03-05 through 2009-03-08; source ID `msha-coal-dust-samples`
- **Conferences:** 9 rows; 2005-03-15 through 2008-10-07; source ID `msha-conferences`
- **Contested Violations:** 90 rows; 2006-05-09 through 2009-02-23; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 435 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 76 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 2001-10-25 through 2021-08-06; source ID `msha-controller-operator-history`
- **Inspections:** 97 rows; 2001-11-13 through 2012-07-05; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 62 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 17 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 78 rows; 2002-07-23 through 2008-09-05; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 98 rows; 2002-03-05 through 2008-12-09; source ID `msha-quartz-samples`
- **Violations:** 854 rows; 2001-12-12 through 2009-02-23; 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/uz-1518469`
- JSON: `/api/v1/mines/uz-1518469`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1518469/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1518469/relationships`
- MCP resource: `mine://1518469/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`