# Belle Ayr Mine

- **MSHA mine ID:** 4800732
- **Status:** Active
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Campbell, WY
- **Operator:** Eagle Specialty Materials LLC
- **Controller:** Petri E Koivula
- **Public source rows linked:** 14,503
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Petri E Koivula (0202403) → Eagle Specialty Materials LLC (0167273) → Belle Ayr Mine (4800732)**

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

## Controller and operator valid-time history

- **Cyprus Amax Minerals Company → Amax Coal West Inc:** 1973-01-01 through 1999-06-29; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Rag Aktiengesellschaft → Alpha Coal West, Inc.:** 1999-06-30 through 2004-07-29; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Foundation Coal Corporation → Alpha Coal West, Inc.:** 2004-07-30 through 2009-07-30; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Alpha Natural Resources, Inc. → Alpha Coal West, Inc.:** 2009-07-31 through 2016-07-25; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Alpha Metallurgical Resources Inc → Contura Coal West LLC:** 2016-07-26 through 2017-12-08; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Jeffery A  Hoops → Blackjewel LLC:** 2017-12-09 through 2019-10-17; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Michael T  Costello → Eagle Specialty Materials LLC:** 2019-10-18 through 2020-08-10; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Petri E Koivula et al → Eagle Specialty Materials LLC:** 2020-08-11 through 2023-05-17; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Mike  Jamison et al → Eagle Specialty Materials LLC:** 2020-08-11 through 2023-05-17; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **John  McNab et al → Eagle Specialty Materials LLC:** 2020-08-11 through 2023-05-17; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Petri E Koivula et al → Eagle Specialty Materials LLC:** 2023-05-18 through 2026-08-11; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **David Michael  Jamison et al → Eagle Specialty Materials LLC:** 2023-05-18 through 2026-08-11; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.
- **Petri E Koivula → Eagle Specialty Materials LLC:** 2026-08-12 through current/open; derived from co-tenure at mine 4800732; source `msha-controller-operator-history`.

- History rows: 13
- Typed edges: 28
- 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 — 30 since 2021:** Accidents and injuries 193 historical accident/injury rows; 1 coded fatalities and 3,177 lost days across the published record.
2. **COMPLIANCE — 236 since 2021:** Violations and penalties 731 violation rows across the full record; 134 carry an S&S flag and $342,372 appears in current assessed amounts.
3. **HEALTH — 952 samples:** Occupational health samples 685 coal dust; 66 coal quartz; 201 noise. 0 personal-sample rows have a published C/E ratio above 1; 17 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 — 3.8M tons:** Quarterly production and employment 103K employee hours and 260 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 109 linked rows:** Contests, conferences and decisions 41 contested-violation rows, 43 civil-penalty docket/decision rows, and 25 conference records linked by issuance number.
6. **CONTRACTORS — 47 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 — 20 since 2021:** Inspections 142 inspection events and 9K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 14,628,974 short tons
- **Labor hours:** 464,947
- **Average employees:** 256
- **Coal supply region:** Powder River Basin
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.1104 — Accumulations of combustible materials.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104
- **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 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 77.807 — Installation of high-voltage transmission cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-I/section-77.807
- **30 CFR 77.516 — Electric wiring and equipment; installation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.516
- **30 CFR 77.401 — Stationary grinding machines; protective devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.401
- **30 CFR 77.1103 — Flammable liquids; storage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1103
- **30 CFR 77.1101 — Escape and evacuation; plan.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1101

## Source coverage

- **Accident, Injuries, and Illnesses:** 193 rows; 2000-04-13 through 2026-04-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2019-07-05 through 2019-07-05; source ID `msha-addresses`
- **Assessed Violations:** 719 rows; 2000-12-04 through 2026-04-30; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 43 rows; 2000-11-21 through 2025-02-04; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 685 rows; 2000-06-20 through 2026-07-08; source ID `msha-coal-dust-samples`
- **Conferences:** 25 rows; 2001-08-27 through 2016-11-30; source ID `msha-conferences`
- **Contested Violations:** 41 rows; 2006-06-19 through 2024-05-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 9,373 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,870 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 13 rows; 1973-01-01 through 2019-10-18; source ID `msha-controller-operator-history`
- **Inspections:** 142 rows; 2000-01-12 through 2026-04-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 201 rows; 2000-06-15 through 2026-04-16; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 66 rows; 2004-08-31 through 2026-04-09; source ID `msha-quartz-samples`
- **Violations:** 731 rows; 2000-12-04 through 2026-04-30; 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/belle-ayr-mine-4800732`
- JSON: `/api/v1/mines/belle-ayr-mine-4800732`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4800732/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4800732/relationships`
- MCP resource: `mine://4800732/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`