# La Plata Mine

- **MSHA mine ID:** 2901825
- **Status:** Abandoned
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** San Juan, NM
- **Operator:** San Juan Coal Company
- **Controller:** Westmoreland Mining Holdings LLC
- **Public source rows linked:** 1,855
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Westmoreland Mining Holdings LLC (0146581) → San Juan Coal Company (P15965) → La Plata Mine (2901825)**

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

## Controller and operator valid-time history

- **Public Service Co of New Mexico et al → Western Coal Company:** 1980-07-01 through 1982-06-30; derived from co-tenure at mine 2901825; source `msha-controller-operator-history`.
- **Tucson Gas & Electric Co  et al → Western Coal Company:** 1980-07-01 through 1982-06-30; derived from co-tenure at mine 2901825; source `msha-controller-operator-history`.
- **General Electric Company → San Juan Coal Company:** 1982-07-01 through 1984-04-01; derived from co-tenure at mine 2901825; source `msha-controller-operator-history`.
- **BHP Billiton → San Juan Coal Company:** 1984-04-02 through 2016-01-31; derived from co-tenure at mine 2901825; source `msha-controller-operator-history`.
- **Westmoreland Coal Company → San Juan Coal Company:** 2016-02-01 through 2019-03-14; derived from co-tenure at mine 2901825; source `msha-controller-operator-history`.
- **Westmoreland Mining Holdings LLC → San Juan Coal Company:** 2019-03-15 through current/open; derived from co-tenure at mine 2901825; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 14
- 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 34 historical accident/injury rows; 0 coded fatalities and 313 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 165 violation rows across the full record; 35 carry an S&S flag and $31,346 appears in current assessed amounts.
3. **HEALTH — 208 samples:** Occupational health samples 86 coal dust; 7 coal quartz; 115 noise. 0 personal-sample rows have a published C/E ratio above 1; 1 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 30K employee hours and 60 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 20 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 9 civil-penalty docket/decision rows, and 10 conference records linked by issuance number.
6. **CONTRACTORS — 8 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 52 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 77.400 — Mechanical equipment guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400
- **30 CFR 77.1104 — Accumulations of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104
- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 48.27 — Training of miners assigned to a task in which they have had no previous experience; minimum courses of instruction.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.27
- **30 CFR 77.1710 — Protective clothing; requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1710
- **30 CFR 77.205 — Travelways at surface installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **30 CFR 77.410 — Mobile equipment; automatic warning devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.410

## Source coverage

- **Accident, Injuries, and Illnesses:** 34 rows; 2000-08-16 through 2008-05-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-02-25 through 2009-02-25; source ID `msha-addresses`
- **Assessed Violations:** 164 rows; 2000-03-13 through 2008-11-03; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 9 rows; 2000-06-05 through 2010-06-23; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 86 rows; 2000-03-13 through 2004-12-03; source ID `msha-coal-dust-samples`
- **Conferences:** 10 rows; 2000-12-28 through 2008-02-11; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2007-05-22 through 2007-05-22; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 955 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 161 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1980-07-01 through 1984-04-02; source ID `msha-controller-operator-history`
- **Inspections:** 52 rows; 2000-03-13 through 2009-02-25; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 70 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 18 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 115 rows; 2000-05-18 through 2008-10-28; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 7 rows; 2000-03-13 through 2002-06-18; source ID `msha-quartz-samples`
- **Violations:** 165 rows; 2000-03-13 through 2008-11-03; 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/la-plata-mine-2901825`
- JSON: `/api/v1/mines/la-plata-mine-2901825`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2901825/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2901825/relationships`
- MCP resource: `mine://2901825/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`