# Alligator Ridge Mine

- **MSHA mine ID:** 2601624
- **Status:** Abandoned
- **Type / commodity:** Surface / Gold Ore
- **Location:** White Pine, NV
- **Operator:** Placer Dome U S Inc
- **Controller:** Placer Dome Ltd
- **Public source rows linked:** 6
- **Source coverage:** 3 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Placer Dome Ltd (M02397) → Placer Dome U S Inc (L11052) → Alligator Ridge Mine (2601624)**

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

## Controller and operator valid-time history

- **Bp Minerals America & Nerco Minerals Co → Bp Gold Company:** 1980-03-01 through 1989-06-29; derived from co-tenure at mine 2601624; source `msha-controller-operator-history`.
- **Rio Tinto Group → Kennecott Alligator Ridge Company:** 1989-06-30 through 1990-05-30; derived from co-tenure at mine 2601624; source `msha-controller-operator-history`.
- **Pegasus Gold Inc Et Al → Usmx Inc:** 1990-05-31 through 1993-12-06; derived from co-tenure at mine 2601624; source `msha-controller-operator-history`.
- **Placer Dome Ltd → Placer Dome U S Inc:** 1993-12-07 through current/open; derived from co-tenure at mine 2601624; source `msha-controller-operator-history`.

- History rows: 4
- 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 0 violation rows across the full record; 0 carry an S&S flag and $0 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 — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 0 since 2021:** Inspections 0 inspection events and 0 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.

No retained recent violation standard resolved to the current Title 30 index.

## Source coverage

- **Addresses of Record:** 1 rows; 1994-09-30 through 1994-09-30; source ID `msha-addresses`
- **Controller and Operator History:** 4 rows; 1980-03-01 through 1993-12-07; source ID `msha-controller-operator-history`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`

## 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/alligator-ridge-mine-2601624`
- JSON: `/api/v1/mines/alligator-ridge-mine-2601624`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2601624/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2601624/relationships`
- MCP resource: `mine://2601624/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`