# Prairie Eagle-Underground

- **MSHA mine ID:** 1103147
- **Status:** Active
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Perry, IL
- **Operator:** Knight Hawk Coal, LLC
- **Controller:** CBR Investments, LLC; CBR Investments II, LLC
- **Public source rows linked:** 32,482
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CBR Investments, LLC; CBR Investments II, LLC (0165661) → Knight Hawk Coal, LLC (P23970) → Prairie Eagle-Underground (1103147)**

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

## Controller and operator valid-time history

- **Franklin D  Robertson  et al → Knight Hawk Coal, LLC:** 2005-04-27 through 2012-05-31; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **James O  Bunn  et al → Knight Hawk Coal, LLC:** 2005-04-27 through 2012-05-31; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **Franklin D.  Robertson et al → Knight Hawk Coal, LLC:** 2012-06-01 through 2021-01-03; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **Arch Coal Inc. et al → Knight Hawk Coal, LLC:** 2012-06-01 through 2021-01-03; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **James O.  Bunn et al → Knight Hawk Coal, LLC:** 2012-06-01 through 2021-01-03; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **CBR Investments LLC et al → Knight Hawk Coal, LLC:** 2021-01-04 through 2021-11-16; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **Arch Coal Inc et al → Knight Hawk Coal, LLC:** 2021-01-04 through 2021-11-16; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **CBR Investments II, LLC et al → Knight Hawk Coal, LLC:** 2021-11-17 through current/open; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.
- **CBR Investments, LLC et al → Knight Hawk Coal, LLC:** 2021-11-17 through current/open; derived from co-tenure at mine 1103147; source `msha-controller-operator-history`.

- History rows: 9
- 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 — 152 since 2021:** Accidents and injuries 344 historical accident/injury rows; 1 coded fatalities and 16,015 lost days across the published record.
2. **COMPLIANCE — 1,901 since 2021:** Violations and penalties 3,801 violation rows across the full record; 695 carry an S&S flag and $2,098,752 appears in current assessed amounts.
3. **HEALTH — 22K samples:** Occupational health samples 20,273 coal dust; 963 coal quartz; 685 noise. 0 personal-sample rows have a published C/E ratio above 1; 209 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 — 1.1M tons:** Quarterly production and employment 158K employee hours and 294 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 893 linked rows:** Contests, conferences and decisions 394 contested-violation rows, 393 civil-penalty docket/decision rows, and 106 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 261 since 2021:** Inspections 642 inspection events and 63K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 4,113,552 short tons
- **Labor hours:** 605,487
- **Average employees:** 298
- **Coal supply region:** Illinois Basin
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 75.370 — Mine ventilation plan; submission and approval.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370
- **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 75.1103-5 — Automatic fire warning devices; actions and response.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1103-5
- **30 CFR 75.1103-8 — Automatic fire sensor and warning device systems; examination and test requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1103-8
- **30 CFR 75.503 — Permissible electric face equipment; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **30 CFR 75.1403 — Other safeguards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-O/section-75.1403
- **30 CFR 75.202 — Protection from falls of roof, face and ribs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.202
- **30 CFR 75.1914 — Maintenance of diesel-powered equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1914
- **30 CFR 75.220 — Roof control plan.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-C/section-75.220
- **30 CFR 75.1909 — Nonpermissible diesel-powered equipment; design and performance requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1909

## Source coverage

- **Accident, Injuries, and Illnesses:** 344 rows; 2007-04-23 through 2026-07-30; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2006-08-02 through 2006-08-02; source ID `msha-addresses`
- **Assessed Violations:** 3,645 rows; 2006-09-11 through 2026-08-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 393 rows; 2010-05-13 through 2026-06-11; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 20,273 rows; 2006-09-11 through 2026-10-08; source ID `msha-coal-dust-samples`
- **Conferences:** 106 rows; 2007-12-05 through 2026-08-12; source ID `msha-conferences`
- **Contested Violations:** 394 rows; 2009-06-08 through 2026-08-11; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 762 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 151 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 2005-04-27 through 2005-04-27; source ID `msha-controller-operator-history`
- **Inspections:** 642 rows; 2006-08-15 through 2026-10-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 254 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 58 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 685 rows; 2006-09-20 through 2026-08-25; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 963 rows; 2006-12-11 through 2026-09-01; source ID `msha-quartz-samples`
- **Violations:** 3,801 rows; 2006-09-11 through 2026-10-07; 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/prairie-eagle-underground-1103147`
- JSON: `/api/v1/mines/prairie-eagle-underground-1103147`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1103147/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1103147/relationships`
- MCP resource: `mine://1103147/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`