# Mesquite

- **MSHA mine ID:** 0404614
- **Status:** Active
- **Type / commodity:** Surface / Gold Ore
- **Location:** Imperial, CA
- **Operator:** Western Mesquite Mines, Inc.
- **Controller:** Equinox Gold Corp
- **Public source rows linked:** 5,403
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Equinox Gold Corp (0143881) → Western Mesquite Mines, Inc. (0051937) → Mesquite (0404614)**

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

## Controller and operator valid-time history

- **Consolidated Gold Fields Limited → Gold Fields Operating Company:** 1982-10-01 through 1989-08-08; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **Hanson PLC → Gold Fields Operating Company:** 1989-08-09 through 1993-06-24; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **Santa Fe Pacific Corp → Santa Fe Pacific Gold Corp:** 1993-06-25 through 1997-05-04; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **Newmont Corporation → Newmont Gold Co:** 1997-05-05 through 2002-09-19; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **Newmont Corporation → Newmont Mining Corp:** 2002-09-20 through 2003-11-06; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **Western Goldfields Incorporated → Western Mesquite Mines, Inc.:** 2003-11-07 through 2009-05-31; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **New Gold Inc → Western Mesquite Mines, Inc.:** 2009-06-01 through 2018-10-29; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.
- **Equinox Gold Corp → Western Mesquite Mines, Inc.:** 2018-10-30 through current/open; derived from co-tenure at mine 0404614; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 21
- 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 — 19 since 2021:** Accidents and injuries 173 historical accident/injury rows; 0 coded fatalities and 2,910 lost days across the published record.
2. **COMPLIANCE — 57 since 2021:** Violations and penalties 322 violation rows across the full record; 76 carry an S&S flag and $138,502 appears in current assessed amounts.
3. **HEALTH — 47 samples:** Occupational health samples 47 personal. 3 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 168K employee hours and 305 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 279 linked rows:** Contests, conferences and decisions 136 contested-violation rows, 136 civil-penalty docket/decision rows, and 7 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 — 22 since 2021:** Inspections 108 inspection events and 4K 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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.17001 — Illumination of surface working areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-P/section-56.17001
- **30 CFR 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018

## Source coverage

- **Accident, Injuries, and Illnesses:** 173 rows; 2000-01-20 through 2026-03-31; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1986-12-01 through 1986-12-01; source ID `msha-addresses`
- **Assessed Violations:** 315 rows; 2000-07-18 through 2025-09-03; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 136 rows; 2009-11-20 through 2024-05-01; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2009-03-27 through 2020-12-22; source ID `msha-conferences`
- **Contested Violations:** 136 rows; 2008-02-26 through 2023-08-02; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 3,115 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 641 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 8 rows; 1982-10-01 through 2003-11-07; source ID `msha-controller-operator-history`
- **Inspections:** 108 rows; 2000-07-18 through 2026-09-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 315 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 78 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:** 47 rows; 2009-03-24 through 2025-09-03; source ID `msha-personal-health-samples`
- **Violations:** 322 rows; 2000-07-18 through 2026-09-10; 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/mesquite-0404614`
- JSON: `/api/v1/mines/mesquite-0404614`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0404614/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0404614/relationships`
- MCP resource: `mine://0404614/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`