# Hecla Greens Creek Mine

- **MSHA mine ID:** 5001267
- **Status:** Active
- **Type / commodity:** Underground / Silver Ore
- **Location:** Juneau, AK
- **Operator:** Hecla Greens Creek Mining Company
- **Controller:** Hecla Mining Company
- **Public source rows linked:** 8,347
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Hecla Mining Company (M00089) → Hecla Greens Creek Mining Company (L11319) → Hecla Greens Creek Mine (5001267)**

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

## Controller and operator valid-time history

- **Amselco Minerals Inc-Exalas Resources Corp Et Al → Greens Creek Mining Company:** 1978-03-09 through 1988-02-29; derived from co-tenure at mine 5001267; source `msha-controller-operator-history`.
- **British Petroleum Company PLC → Greens Creek Mining Company:** 1988-03-01 through 1989-06-29; derived from co-tenure at mine 5001267; source `msha-controller-operator-history`.
- **Rio Tinto Group → Hecla Greens Creek Mining Company:** 1989-06-30 through 2008-04-23; derived from co-tenure at mine 5001267; source `msha-controller-operator-history`.
- **Hecla Mining Company → Hecla Greens Creek Mining Company:** 2008-04-24 through current/open; derived from co-tenure at mine 5001267; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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 — 62 since 2021:** Accidents and injuries 345 historical accident/injury rows; 0 coded fatalities and 6,310 lost days across the published record.
2. **COMPLIANCE — 216 since 2021:** Violations and penalties 1,388 violation rows across the full record; 245 carry an S&S flag and $602,453 appears in current assessed amounts.
3. **HEALTH — 561 samples:** Occupational health samples 481 personal; 80 area. 5 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 306K employee hours and 535 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 136 linked rows:** Contests, conferences and decisions 31 contested-violation rows, 31 civil-penalty docket/decision rows, and 74 conference records linked by issuance number.
6. **CONTRACTORS — 22 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 — 60 since 2021:** Inspections 207 inspection events and 18K 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 57.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12008
- **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 57.16001 — Stacking and storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-O/section-57.16001
- **30 CFR 57.4130 — Surface electric substations and liquid storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4130
- **30 CFR 57.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20003
- **30 CFR 57.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4101
- **30 CFR 57.20014 — Prohibited areas for food and beverages.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20014
- **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 57.14209 — Safety procedures for towing.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14209
- **30 CFR 57.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4104

## Source coverage

- **Accident, Injuries, and Illnesses:** 345 rows; 2000-01-11 through 2026-09-16; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1995-12-06 through 1995-12-06; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 80 rows; 2015-01-17 through 2026-08-08; source ID `msha-area-samples`
- **Assessed Violations:** 1,321 rows; 2000-03-08 through 2026-09-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 31 rows; 2006-06-23 through 2026-01-21; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 74 rows; 2001-06-20 through 2023-08-14; source ID `msha-conferences`
- **Contested Violations:** 31 rows; 2005-12-05 through 2025-02-16; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 3,240 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 611 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1978-03-09 through 1989-06-30; source ID `msha-controller-operator-history`
- **Inspections:** 207 rows; 2000-03-07 through 2026-10-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 424 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 108 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:** 481 rows; 2000-10-06 through 2026-03-19; source ID `msha-personal-health-samples`
- **Violations:** 1,388 rows; 2000-03-08 through 2026-10-10; 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/hecla-greens-creek-mine-5001267`
- JSON: `/api/v1/mines/hecla-greens-creek-mine-5001267`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/5001267/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/5001267/relationships`
- MCP resource: `mine://5001267/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`