# ROCKY MOUNTAIN MINE

- **MSHA mine ID:** 2900189
- **Status:** Active
- **Type / commodity:** Surface / Pumice
- **Location:** Rio Arriba, NM
- **Operator:** Cr Minerals Company LLC
- **Controller:** CR Minerals Company LLC
- **Public source rows linked:** 552
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CR Minerals Company LLC (M12385) → Cr Minerals Company LLC (L16339) → ROCKY MOUNTAIN MINE (2900189)**

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

## Controller and operator valid-time history

- **Rayford  Alley → General Pumice Corp:** 1950-01-01 through 1996-11-30; derived from co-tenure at mine 2900189; source `msha-controller-operator-history`.
- **Redland Plc → Western Mobile Santa Fe Inc:** 1996-12-01 through 1997-12-31; derived from co-tenure at mine 2900189; source `msha-controller-operator-history`.
- **Canyon Resources Corp → Cr Minerals Corp:** 1998-01-01 through 1998-12-31; derived from co-tenure at mine 2900189; source `msha-controller-operator-history`.
- **CR Minerals Company LLC → Cr Minerals Company LLC:** 1999-01-01 through current/open; derived from co-tenure at mine 2900189; 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 1 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 34 since 2021:** Violations and penalties 117 violation rows across the full record; 18 carry an S&S flag and $18,021 appears in current assessed amounts.
3. **HEALTH — 25 samples:** Occupational health samples 25 personal. 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 13K employee hours and 25 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 2 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 — 16 since 2021:** Inspections 89 inspection events and 985 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 56.14115 — Stationary grinding machines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14115
- **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 56.16002 — Bins, hoppers, silos, tanks, and surge piles.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16002
- **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 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.9100 — Traffic control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9100
- **30 CFR 56.4011 — Abandoned electric circuits.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4011
- **30 CFR 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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 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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2002-05-16 through 2002-05-16; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1972-07-11 through 1972-07-11; source ID `msha-addresses`
- **Assessed Violations:** 117 rows; 2000-02-16 through 2026-05-27; source ID `msha-assessed-violations`
- **Conferences:** 2 rows; 2017-06-20 through 2017-06-20; source ID `msha-conferences`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 1999-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 89 rows; 2000-02-16 through 2026-05-26; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 159 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 36 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:** 25 rows; 2003-11-06 through 2026-02-10; source ID `msha-personal-health-samples`
- **Violations:** 117 rows; 2000-02-16 through 2026-05-27; 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/rocky-mountain-mine-2900189`
- JSON: `/api/v1/mines/rocky-mountain-mine-2900189`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2900189/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2900189/relationships`
- MCP resource: `mine://2900189/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`