# RUBY MINE

- **MSHA mine ID:** 0403108
- **Status:** Active
- **Type / commodity:** Underground / Gold Ore
- **Location:** Nevada, CA
- **Operator:** Ruby Gold, Inc.
- **Controller:** Cirrus Holdings LLC
- **Public source rows linked:** 211
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Cirrus Holdings LLC (0198881) → Ruby Gold, Inc. (0124370) → RUBY MINE (0403108)**

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

## Controller and operator valid-time history

- **Ruby Development Company → J D Mc Cloud:** 1950-01-01 through 1978-04-30; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.
- **Kerns Dick → Rio Rico Mines Inc:** 1978-05-01 through 1980-05-19; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.
- **Du Bois Francis E Iii → Alhambra Mines Inc:** 1980-05-20 through 1988-04-07; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.
- **Link Resources Usa → Link Resources Usa:** 1988-04-08 through 1990-06-30; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.
- **Brush Creek Mining & Development Company Inc → Brush Creek Mining & Development Company Inc:** 1990-07-01 through 2011-06-30; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.
- **North Bay Resources Inc. → Ruby Gold, Inc.:** 2011-07-01 through 2026-03-13; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.
- **Cirrus Holdings LLC → Ruby Gold, Inc.:** 2026-03-14 through current/open; derived from co-tenure at mine 0403108; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 20
- 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 — 0 since 2021:** Accidents and injuries 2 historical accident/injury rows; 0 coded fatalities and 268 lost days across the published record.
2. **COMPLIANCE — 14 since 2021:** Violations and penalties 33 violation rows across the full record; 6 carry an S&S flag and $9,051 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
5. **LEGAL — 41 linked rows:** Contests, conferences and decisions 12 contested-violation rows, 12 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 — 6 since 2021:** Inspections 28 inspection events and 559 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 57.12028 — 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
- **30 CFR 57.12025 — Grounding circuit enclosures.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12025
- **30 CFR 57.14115 — Stationary grinding machines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14115
- **30 CFR 57.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-U/section-57.23002
- **30 CFR 47.31 — Requirement for a HazCom program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-D/section-47.31
- **30 CFR 41.20 — Legal identity report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-C/section-41.20
- **30 CFR 57.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-A/section-57.1000
- **30 CFR 48.26 — Experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.26
- **30 CFR 48.23 — Training plans; time of submission; where filed; information required; time for approval; method for disapproval; commencement of training; approval of instructors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.23
- **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:** 2 rows; 2012-04-26 through 2014-09-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-09-08 through 2025-09-08; source ID `msha-addresses`
- **Assessed Violations:** 32 rows; 2012-07-17 through 2025-09-09; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 12 rows; 2013-10-25 through 2015-01-07; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2013-01-28 through 2026-01-15; source ID `msha-conferences`
- **Contested Violations:** 12 rows; 2012-07-17 through 2025-09-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 50 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 16 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2011-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 28 rows; 2012-07-17 through 2026-08-24; source ID `msha-inspections`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 33 rows; 2012-07-17 through 2025-09-09; 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/ruby-mine-0403108`
- JSON: `/api/v1/mines/ruby-mine-0403108`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0403108/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0403108/relationships`
- MCP resource: `mine://0403108/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`