# San Juan Deep

- **MSHA mine ID:** 2902201
- **Status:** Abandoned
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** San Juan, NM
- **Operator:** San Juan Coal Company
- **Controller:** Westmoreland Mining Holdings LLC
- **Public source rows linked:** 1,898
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Westmoreland Mining Holdings LLC (0146581) → San Juan Coal Company (P15965) → San Juan Deep (2902201)**

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

## Controller and operator valid-time history

- **BHP Billiton → San Juan Coal Company:** 2000-04-01 through 2016-01-31; derived from co-tenure at mine 2902201; 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 2902201; 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 2902201; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 7
- 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 11 historical accident/injury rows; 0 coded fatalities and 190 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 29 violation rows across the full record; 8 carry an S&S flag and $6,218 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 — 0 tons:** Quarterly production and employment 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 12 inspection events and 277 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 77.1901-1 — Methane and oxygen deficiency tests; approved devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-T/section-77.1901-1
- **30 CFR 77.1900-1 — Compliance with approved slope and shaft sinking plans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-T/section-77.1900-1
- **30 CFR 77.1916 — Welding, cutting, and soldering; fire protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-T/section-77.1916
- **30 CFR 77.1109 — Quantity and location of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1109
- **30 CFR 77.502 — Electric equipment; examination, testing, and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502
- **30 CFR 77.1110 — Examination and maintenance of firefighting equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110
- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.1607 — Loading and haulage equipment; operation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1607
- **30 CFR 77.208 — Storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.208

## Source coverage

- **Accident, Injuries, and Illnesses:** 11 rows; 2001-03-24 through 2002-02-15; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2002-06-14 through 2002-06-14; source ID `msha-addresses`
- **Assessed Violations:** 27 rows; 2001-05-15 through 2002-02-07; source ID `msha-assessed-violations`
- **Conferences:** 1 rows; 2002-02-20 through 2002-02-20; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 1,497 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 306 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 2000-04-01 through 2000-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 12 rows; 2000-05-22 through 2002-03-26; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 10 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 29 rows; 2001-05-15 through 2002-02-07; 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/san-juan-deep-2902201`
- JSON: `/api/v1/mines/san-juan-deep-2902201`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2902201/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2902201/relationships`
- MCP resource: `mine://2902201/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`