# Bloomington Underground Mine

- **MSHA mine ID:** 1202322
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Monroe, IN
- **Operator:** Rogers Group Inc
- **Controller:** Rogers Group Inc
- **Public source rows linked:** 2,839
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Rogers Group Inc (M00452) → Rogers Group Inc (L06514) → Bloomington Underground Mine (1202322)**

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

## Controller and operator valid-time history

- **Rogers Group Inc → Rogers Group Inc:** 2001-11-27 through current/open; derived from co-tenure at mine 1202322; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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 10 historical accident/injury rows; 0 coded fatalities and 57 lost days across the published record.
2. **COMPLIANCE — 76 since 2021:** Violations and penalties 229 violation rows across the full record; 54 carry an S&S flag and $59,776 appears in current assessed amounts.
3. **HEALTH — 208 samples:** Occupational health samples 192 personal; 16 area. 14 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 33K employee hours and 63 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 23 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 11 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 — 33 since 2021:** Inspections 148 inspection events and 3K 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 57.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100
- **30 CFR 57.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12006
- **30 CFR 57.12028 — Testing grounding systems.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12028
- **30 CFR 57.14132 — Horns and backup alarms for surface equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14132
- **30 CFR 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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
- **30 CFR 57.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12030

## Source coverage

- **Accident, Injuries, and Illnesses:** 10 rows; 2003-04-22 through 2019-07-30; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-04-15 through 2013-04-15; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 16 rows; 2015-10-28 through 2026-07-30; source ID `msha-area-samples`
- **Assessed Violations:** 226 rows; 2002-05-14 through 2026-07-30; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 11 rows; 2006-10-31 through 2025-02-25; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2002-06-04 through 2002-06-04; source ID `msha-conferences`
- **Contested Violations:** 11 rows; 2005-09-13 through 2024-06-25; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,354 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 324 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 2001-11-27 through 2001-11-27; source ID `msha-controller-operator-history`
- **Inspections:** 148 rows; 2002-05-14 through 2026-07-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 258 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 56 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:** 192 rows; 2002-12-18 through 2026-07-30; source ID `msha-personal-health-samples`
- **Violations:** 229 rows; 2002-05-14 through 2026-07-30; 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/bloomington-underground-mine-1202322`
- JSON: `/api/v1/mines/bloomington-underground-mine-1202322`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1202322/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1202322/relationships`
- MCP resource: `mine://1202322/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`