# BUNKER HILL MINE

- **MSHA mine ID:** 1000083
- **Status:** Active
- **Type / commodity:** Underground / Lead-Zinc Ore
- **Location:** Shoshone, ID
- **Operator:** Silver Valley Metals Corp.
- **Controller:** Bunker Hill Mining Corp
- **Public source rows linked:** 1,824
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Bunker Hill Mining Corp (0167281) → Silver Valley Metals Corp. (0181213) → BUNKER HILL MINE (1000083)**

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

## Controller and operator valid-time history

- **Gulf USA Corp → Bunker Hill Company:** 1950-01-01 through 1982-11-21; derived from co-tenure at mine 1000083; source `msha-controller-operator-history`.
- **BH Properties Inc  et al → Bunker Limited Partnership:** 1982-11-22 through 1986-06-01; derived from co-tenure at mine 1000083; source `msha-controller-operator-history`.
- **Bunker Hill Mining Company Inc → Bunker Hill Mining Company (Us) Inc:** 1986-06-02 through 1992-08-26; derived from co-tenure at mine 1000083; source `msha-controller-operator-history`.
- **Robert  Hopper → Placer Mining Corporation:** 1992-08-27 through 2014-03-23; derived from co-tenure at mine 1000083; source `msha-controller-operator-history`.
- **Robert  Hopper Jr → Placer Mining Corporation:** 2014-03-24 through 2022-02-17; derived from co-tenure at mine 1000083; source `msha-controller-operator-history`.
- **Bunker Hill Mining Corp → Silver Valley Metals Corp.:** 2022-02-18 through current/open; derived from co-tenure at mine 1000083; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 17
- 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 — 5 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 101 lost days across the published record.
2. **COMPLIANCE — 49 since 2021:** Violations and penalties 207 violation rows across the full record; 32 carry an S&S flag and $36,521 appears in current assessed amounts.
3. **HEALTH — 37 samples:** Occupational health samples 20 personal; 17 area. 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 37K employee hours and 72 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 32 linked rows:** Contests, conferences and decisions 10 contested-violation rows, 10 civil-penalty docket/decision rows, and 12 conference records linked by issuance number.
6. **CONTRACTORS — 6 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 3K 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 57.11051 — Escape routes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11051
- **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 57.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14205
- **30 CFR 57.11052 — Refuge areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11052
- **30 CFR 57.20008 — Toilet facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20008
- **30 CFR 57.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12030
- **30 CFR 57.18013 — Emergency communications system.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-Q/section-57.18013
- **30 CFR 57.6130 — Explosive material storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-E/section-57.6130
- **30 CFR 57.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12002

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2000-10-04 through 2025-03-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-12-03 through 2025-12-03; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 17 rows; 2020-10-28 through 2026-03-19; source ID `msha-area-samples`
- **Assessed Violations:** 204 rows; 2000-03-21 through 2026-07-28; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 10 rows; 2015-08-28 through 2018-11-14; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 12 rows; 2000-12-04 through 2021-08-19; source ID `msha-conferences`
- **Contested Violations:** 10 rows; 2014-12-17 through 2018-07-19; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 629 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 131 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1950-01-01 through 2022-02-18; source ID `msha-controller-operator-history`
- **Inspections:** 139 rows; 2000-03-21 through 2026-07-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 342 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 80 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:** 20 rows; 2010-04-21 through 2026-03-19; source ID `msha-personal-health-samples`
- **Violations:** 207 rows; 2000-03-21 through 2026-07-28; 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/bunker-hill-mine-1000083`
- JSON: `/api/v1/mines/bunker-hill-mine-1000083`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1000083/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1000083/relationships`
- MCP resource: `mine://1000083/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`