# Granite Creek Mine

- **MSHA mine ID:** 2601597
- **Status:** Active
- **Type / commodity:** Underground / Gold Ore
- **Location:** Humboldt, NV
- **Operator:** Osgood Mining Company, LLC
- **Controller:** i-80 Gold Corp
- **Public source rows linked:** 3,654
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**i-80 Gold Corp (0162401) → Osgood Mining Company, LLC (0145513) → Granite Creek Mine (2601597)**

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

## Controller and operator valid-time history

- **Homestake Mining Company  et al → Homestake Mining Company Of California:** 1980-01-01 through 2011-09-01; derived from co-tenure at mine 2601597; source `msha-controller-operator-history`.
- **Barrick Gold Inc  et al → Homestake Mining Company Of California:** 1980-01-01 through 2011-09-01; derived from co-tenure at mine 2601597; source `msha-controller-operator-history`.
- **Atna Resources Ltd. → Atna Resources, Inc.:** 2011-09-02 through 2016-05-23; derived from co-tenure at mine 2601597; source `msha-controller-operator-history`.
- **Waterton Global Resource Management Cayman Corp → Osgood Mining Company, LLC:** 2016-05-24 through 2021-04-19; derived from co-tenure at mine 2601597; source `msha-controller-operator-history`.
- **i-80 Gold Corp → Osgood Mining Company, LLC:** 2021-04-20 through current/open; derived from co-tenure at mine 2601597; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 12
- 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 — 12 since 2021:** Accidents and injuries 23 historical accident/injury rows; 0 coded fatalities and 954 lost days across the published record.
2. **COMPLIANCE — 135 since 2021:** Violations and penalties 230 violation rows across the full record; 30 carry an S&S flag and $355,121 appears in current assessed amounts.
3. **HEALTH — 53 samples:** Occupational health samples 46 personal; 7 area. 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 11K employee hours and 30 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 50 linked rows:** Contests, conferences and decisions 18 contested-violation rows, 18 civil-penalty docket/decision rows, and 14 conference records linked by issuance number.
6. **CONTRACTORS — 15 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 — 50 since 2021:** Inspections 108 inspection events and 2K 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 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 57.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100
- **30 CFR 57.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20011
- **30 CFR 57.3360 — Ground support use.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-B/section-57.3360
- **30 CFR 57.9313 — Roadway maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-H/section-57.9313
- **30 CFR 50.10 — Immediate notification.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-B/section-50.10
- **30 CFR 47.42 — Label contents.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.42
- **30 CFR 57.4102 — Spillage and leakage.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4102

## Source coverage

- **Accident, Injuries, and Illnesses:** 23 rows; 2012-10-22 through 2026-07-27; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-05-01 through 2014-05-01; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 7 rows; 2015-11-09 through 2024-07-18; source ID `msha-area-samples`
- **Assessed Violations:** 221 rows; 2012-03-19 through 2026-07-22; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 18 rows; 2013-07-10 through 2025-06-24; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 14 rows; 2013-01-31 through 2026-09-03; source ID `msha-conferences`
- **Contested Violations:** 18 rows; 2012-03-19 through 2026-03-02; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,192 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 497 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1980-01-01 through 2016-05-24; source ID `msha-controller-operator-history`
- **Inspections:** 108 rows; 2012-03-15 through 2026-09-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 223 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 50 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:** 46 rows; 2013-03-12 through 2025-08-06; source ID `msha-personal-health-samples`
- **Violations:** 230 rows; 2012-03-19 through 2026-07-22; 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/granite-creek-mine-2601597`
- JSON: `/api/v1/mines/granite-creek-mine-2601597`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2601597/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2601597/relationships`
- MCP resource: `mine://2601597/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`