# Cortez District

- **MSHA mine ID:** 2600827
- **Status:** Active
- **Type / commodity:** Surface / Gold Ore
- **Location:** Lander, NV
- **Operator:** Nevada Gold Mines LLC
- **Controller:** Barrick Nevada Holding LLC; Newmont USA Limited
- **Public source rows linked:** 23,951
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Barrick Nevada Holding LLC; Newmont USA Limited (0149763) → Nevada Gold Mines LLC (0165474) → Cortez District (2600827)**

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

## Controller and operator valid-time history

- **Placer Dome Ltd → Cortez Gold Mines - (J V):** 1950-01-01 through 2008-05-13; derived from co-tenure at mine 2600827; source `msha-controller-operator-history`.
- **Barrick Gold Corp → Cortez Joint Venture:** 2008-05-16 through 2012-01-16; derived from co-tenure at mine 2600827; source `msha-controller-operator-history`.
- **Barrick Gold Corp → Barrick Cortez Inc.:** 2012-01-17 through 2019-06-30; derived from co-tenure at mine 2600827; source `msha-controller-operator-history`.
- **Barrick Nevada Holding LLC et al → Nevada Gold Mines LLC:** 2019-07-01 through current/open; derived from co-tenure at mine 2600827; source `msha-controller-operator-history`.
- **Newmont USA Limited et al → Nevada Gold Mines LLC:** 2019-07-01 through current/open; derived from co-tenure at mine 2600827; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 — 80 since 2021:** Accidents and injuries 478 historical accident/injury rows; 1 coded fatalities and 6,009 lost days across the published record.
2. **COMPLIANCE — 293 since 2021:** Violations and penalties 1,454 violation rows across the full record; 287 carry an S&S flag and $899,782 appears in current assessed amounts.
3. **HEALTH — 180 samples:** Occupational health samples 180 personal. 4 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 467K employee hours and 951 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 546 linked rows:** Contests, conferences and decisions 214 contested-violation rows, 241 civil-penalty docket/decision rows, and 91 conference records linked by issuance number.
6. **CONTRACTORS — 85 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 — 93 since 2021:** Inspections 281 inspection events and 12K 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 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 56.4104 — Combustible waste.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **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
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **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 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.4102 — Spillage and leakage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4102
- **30 CFR 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12068 — Locking transformer enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12068

## Source coverage

- **Accident, Injuries, and Illnesses:** 478 rows; 2000-02-18 through 2026-09-03; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1988-09-27 through 1988-09-27; source ID `msha-addresses`
- **Assessed Violations:** 1,411 rows; 2000-05-11 through 2026-07-15; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 241 rows; 2003-02-04 through 2025-06-26; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 91 rows; 2000-10-05 through 2026-09-23; source ID `msha-conferences`
- **Contested Violations:** 214 rows; 2003-06-10 through 2024-04-24; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 16,032 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 3,185 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2019-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 281 rows; 2000-05-11 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 302 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 75 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:** 180 rows; 2002-11-25 through 2024-01-04; source ID `msha-personal-health-samples`
- **Violations:** 1,454 rows; 2000-05-11 through 2026-10-07; 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/cortez-district-2600827`
- JSON: `/api/v1/mines/cortez-district-2600827`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2600827/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2600827/relationships`
- MCP resource: `mine://2600827/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`