# CASSELMAN MINE

- **MSHA mine ID:** 1800780
- **Status:** Active
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Garrett, MD
- **Operator:** Rosebud Mining Company
- **Controller:** J Clifford  Forrest III
- **Public source rows linked:** 16,939
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**J Clifford  Forrest III (C07485) → Rosebud Mining Company (P09635) → CASSELMAN MINE (1800780)**

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

## Controller and operator valid-time history

- **Joseph J  Peles → Maryland Energy Resources, LLC:** 2009-02-27 through 2011-05-18; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Corsa Coal Corporation → Maryland Energy Resources, LLC:** 2011-05-19 through 2012-06-28; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Risa  Taylor → ARJ Construction Co. Inc.:** 2012-06-29 through 2006-02-23; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Freddie A  Taylor → ARJ Construction Co. Inc.:** 2012-06-29 through 2012-12-31; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Corsa Coal Corporation → Maryland Energy Resources, LLC:** 2013-01-01 through 2013-03-14; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Joseph J  Peles → Maryland Energy Resources, LLC:** 2013-01-01 through 2011-05-18; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Quintana Capital Group GP Ltd et al → Maryland Energy Resources, LLC:** 2013-03-15 through 2012-06-28; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **Quintana Capital Group GP Ltd et al → Maryland Energy Resources, LLC:** 2013-03-15 through 2025-04-03; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.
- **J Clifford  Forrest III → Rosebud Mining Company:** 2025-04-04 through current/open; derived from co-tenure at mine 1800780; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 19
- Interval anomalies: 3
- 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 — 39 since 2021:** Accidents and injuries 110 historical accident/injury rows; 0 coded fatalities and 2,096 lost days across the published record.
2. **COMPLIANCE — 573 since 2021:** Violations and penalties 1,337 violation rows across the full record; 246 carry an S&S flag and $469,752 appears in current assessed amounts.
3. **HEALTH — 12K samples:** Occupational health samples 11,133 coal dust; 331 coal quartz; 317 noise. 0 personal-sample rows have a published C/E ratio above 1; 47 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 — 102K tons:** Quarterly production and employment 30K employee hours and 46 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 301 linked rows:** Contests, conferences and decisions 108 contested-violation rows, 108 civil-penalty docket/decision rows, and 85 conference records linked by issuance number.
6. **CONTRACTORS — 7 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 — 86 since 2021:** Inspections 236 inspection events and 19K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 503,575 short tons
- **Labor hours:** 271,002
- **Average employees:** 117
- **Coal supply region:** Appalachia Northern
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **30 CFR 75.1403 — Other safeguards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-O/section-75.1403
- **30 CFR 75.400 — Accumulation of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **30 CFR 75.517 — Power wires and cables; insulation and protection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517
- **30 CFR 75.202 — Protection from falls of roof, face and ribs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 72.630 — Drill dust control at underground areas of underground mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-E/section-72.630
- **30 CFR 75.503 — Permissible electric face equipment; maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **30 CFR 75.900-4 — Testing, examination, and maintenance of circuit breakers; record.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-J/section-75.900-4
- **30 CFR 75.380 — Escapeways; bituminous and lignite mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.380

## Source coverage

- **Accident, Injuries, and Illnesses:** 110 rows; 2012-01-04 through 2026-07-10; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2015-10-05 through 2015-10-05; source ID `msha-addresses`
- **Assessed Violations:** 1,326 rows; 2010-06-15 through 2026-08-14; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 108 rows; 2012-11-16 through 2026-05-14; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 11,133 rows; 2010-07-27 through 2026-10-08; source ID `msha-coal-dust-samples`
- **Conferences:** 85 rows; 2012-10-26 through 2025-04-02; source ID `msha-conferences`
- **Contested Violations:** 108 rows; 2011-10-25 through 2026-06-05; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,348 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 260 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 2009-02-27 through 2025-04-04; source ID `msha-controller-operator-history`
- **Inspections:** 236 rows; 2010-05-10 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 182 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 47 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 317 rows; 2011-09-15 through 2026-06-11; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 331 rows; 2011-08-30 through 2026-08-26; source ID `msha-quartz-samples`
- **Violations:** 1,337 rows; 2010-06-15 through 2026-08-14; 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/casselman-mine-1800780`
- JSON: `/api/v1/mines/casselman-mine-1800780`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1800780/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1800780/relationships`
- MCP resource: `mine://1800780/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`