# Black Rock Mine

- **MSHA mine ID:** 0202145
- **Status:** Active
- **Type / commodity:** Surface / Gypsum
- **Location:** Mohave, AZ
- **Operator:** Western Mining and Minerals, Inc.
- **Controller:** Saint-Gobain
- **Public source rows linked:** 2,993
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Saint-Gobain (M08468) → Western Mining and Minerals, Inc. (L18156) → Black Rock Mine (0202145)**

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

## Controller and operator valid-time history

- **Berry  Howie → Philadelphia Development Corp Inc:** 1983-03-01 through 1985-03-24; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **Carl  Freeberg → Zonah Corp:** 1985-03-25 through 1989-02-28; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **Douglas G  Jones → D G Jones & Son Company:** 1989-03-01 through 1989-12-31; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **Don G  Cecala → Western Gypsum Corp:** 1990-01-01 through 2000-12-14; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **James Hardie Industries Ltd → Western Mining & Minerals Inc:** 2000-12-15 through 2002-04-23; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **BPB Plc → Western Mining & Minerals Inc:** 2002-04-24 through 2002-04-24; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **BPB Plc → BPB Gypsum, Inc.:** 2002-04-25 through 2005-04-30; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **James Hardie Industries Ltd → Western Mining and Minerals, Inc.:** 2005-05-01 through 2002-04-23; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **BPB Plc → Western Mining and Minerals, Inc.:** 2005-05-01 through 2007-01-08; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **Saint-Gobain → BPB Gypsum, Inc.:** 2007-01-01 through 2005-04-30; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **Saint-Gobain → Western Mining & Minerals Inc:** 2007-01-09 through 2002-04-24; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.
- **Saint-Gobain → Western Mining and Minerals, Inc.:** 2007-01-09 through current/open; derived from co-tenure at mine 0202145; source `msha-controller-operator-history`.

- History rows: 12
- Typed edges: 28
- Interval anomalies: 3
- 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 — 3 since 2021:** Accidents and injuries 8 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 15 since 2021:** Violations and penalties 188 violation rows across the full record; 23 carry an S&S flag and $21,189 appears in current assessed amounts.
3. **HEALTH — 33 samples:** Occupational health samples 33 personal. 11 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 6K employee hours and 13 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
6. **CONTRACTORS — 9 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 — 13 since 2021:** Inspections 70 inspection events and 1K 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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.14132 — Horns and backup alarms.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **30 CFR 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.15014 — Eye protection when operating grinding wheels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15014
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 56.6502 — Safety fuse.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6502
- **30 CFR 48.29 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.29

## Source coverage

- **Accident, Injuries, and Illnesses:** 8 rows; 2004-05-03 through 2026-03-19; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-10-01 through 2011-10-01; source ID `msha-addresses`
- **Assessed Violations:** 188 rows; 2000-09-07 through 2026-08-11; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2014-02-12 through 2014-02-12; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2014-12-10 through 2014-12-10; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2013-06-27 through 2013-06-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,890 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 361 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 12 rows; 1983-03-01 through 2005-05-01; source ID `msha-controller-operator-history`
- **Inspections:** 70 rows; 2000-09-07 through 2026-08-11; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 188 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 49 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:** 33 rows; 2000-09-12 through 2024-02-06; source ID `msha-personal-health-samples`
- **Violations:** 188 rows; 2000-09-07 through 2026-08-11; 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/black-rock-mine-0202145`
- JSON: `/api/v1/mines/black-rock-mine-0202145`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0202145/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0202145/relationships`
- MCP resource: `mine://0202145/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`