# Sixteen To One Mine

- **MSHA mine ID:** 0401299
- **Status:** NonProducing
- **Type / commodity:** Underground / Gold Ore
- **Location:** Sierra, CA
- **Operator:** Quartzview Corporation
- **Controller:** Roger  Haas; Simon  Westbrook
- **Public source rows linked:** 1,968
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Roger  Haas; Simon  Westbrook (0169801) → Quartzview Corporation (0183313) → Sixteen To One Mine (0401299)**

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

## Controller and operator valid-time history

- **Lawrence L  Sapp → Sixteen To One Mining Corp:** 1950-01-01 through 1981-06-30; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Leazk Minerals → Leazk Minerals & 16 To 1:** 1981-07-01 through 1983-08-14; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Walter A  Marting → Lucky Chance Mining Company Inc:** 1983-08-15 through 1985-03-31; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **E W  Renshaw → Kanaka Creek Joint Venture:** 1985-04-01 through 1987-06-19; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Royal Gold Inc → Royal Kanaka Creek Corp:** 1987-06-20 through 1991-06-03; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Michael M Miller → Original Sixteen To One Mine Inc:** 1991-06-04 through 2022-04-25; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Simon  Westbrook et al → Quartzview Corporation:** 2022-04-26 through 2024-09-17; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Roger  Haas et al → Quartzview Corporation:** 2022-04-26 through 2024-09-17; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Michael M Miller → Original Sixteen to One Mine, Inc.:** 2024-09-18 through 2025-03-02; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Roger  Haas et al → Quartzview Corporation:** 2025-03-03 through current/open; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.
- **Simon  Westbrook et al → Quartzview Corporation:** 2025-03-03 through current/open; derived from co-tenure at mine 0401299; source `msha-controller-operator-history`.

- History rows: 11
- Typed edges: 27
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 2 since 2021:** Accidents and injuries 14 historical accident/injury rows; 1 coded fatalities and 145 lost days across the published record.
2. **COMPLIANCE — 54 since 2021:** Violations and penalties 349 violation rows across the full record; 60 carry an S&S flag and $67,960 appears in current assessed amounts.
3. **HEALTH — 13 samples:** Occupational health samples 13 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 5 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 540 linked rows:** Contests, conferences and decisions 217 contested-violation rows, 306 civil-penalty docket/decision rows, and 17 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 — 40 since 2021:** Inspections 139 inspection events and 5K 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 57.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20003
- **30 CFR 57.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11002
- **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 57.11001 — Safe access.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11001
- **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 57.4560 — Mine entrances.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4560
- **30 CFR 57.6132 — Magazine requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-E/section-57.6132
- **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 57.3360 — Ground support use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-B/section-57.3360
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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:** 14 rows; 2000-01-24 through 2023-12-19; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2023-05-29 through 2023-05-29; source ID `msha-addresses`
- **Assessed Violations:** 331 rows; 2000-01-11 through 2026-05-26; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 306 rows; 2001-01-12 through 2019-06-12; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2000-02-01 through 2016-10-21; source ID `msha-conferences`
- **Contested Violations:** 217 rows; 2000-09-21 through 2018-10-24; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 125 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 29 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 11 rows; 1950-01-01 through 2025-03-03; source ID `msha-controller-operator-history`
- **Inspections:** 139 rows; 2000-01-11 through 2026-10-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 340 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 75 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:** 13 rows; 2000-12-05 through 2026-04-09; source ID `msha-personal-health-samples`
- **Violations:** 349 rows; 2000-01-11 through 2026-10-08; 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/sixteen-to-one-mine-0401299`
- JSON: `/api/v1/mines/sixteen-to-one-mine-0401299`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0401299/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0401299/relationships`
- MCP resource: `mine://0401299/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`