# Eureka Underground

- **MSHA mine ID:** 1202005
- **Status:** Active
- **Type / commodity:** Underground / Dimension Limestone
- **Location:** Lawrence, IN
- **Operator:** IN Limestone Co
- **Controller:** Polycor Inc
- **Public source rows linked:** 2,447
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Polycor Inc (M12431) → IN Limestone Co (0134433) → Eureka Underground (1202005)**

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

## Controller and operator valid-time history

- **Cindy  Elliott et al → Elliott Mineral Extraction Inc:** 1987-06-01 through 2019-09-30; derived from co-tenure at mine 1202005; source `msha-controller-operator-history`.
- **Brian  Elliott et al → Elliott Mineral Extraction Inc:** 1987-06-01 through 2019-09-30; derived from co-tenure at mine 1202005; source `msha-controller-operator-history`.
- **Limestone Holdings Corporation → IN Limestone Co:** 2019-10-01 through 2014-05-12; derived from co-tenure at mine 1202005; source `msha-controller-operator-history`.
- **Wynnchurch Capital → IN Limestone Co:** 2019-10-01 through 2018-10-10; derived from co-tenure at mine 1202005; source `msha-controller-operator-history`.
- **Polycor Inc → IN Limestone Co:** 2019-10-01 through current/open; derived from co-tenure at mine 1202005; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- Interval anomalies: 2
- 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 — 2 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 111 lost days across the published record.
2. **COMPLIANCE — 21 since 2021:** Violations and penalties 227 violation rows across the full record; 53 carry an S&S flag and $46,293 appears in current assessed amounts.
3. **HEALTH — 199 samples:** Occupational health samples 193 personal; 6 area. 11 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 5K employee hours and 8 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 29 since 2021:** Inspections 149 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 57.12030 — Correction of dangerous conditions.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12030
- **30 CFR 57.14100 — Safety defects; examination, correction and records.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14100
- **30 CFR 57.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4402
- **30 CFR 57.15006 — Protective equipment and clothing for hazards and irritants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15006
- **30 CFR 57.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4201
- **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 57.15005 — Safety belts and lines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15005
- **30 CFR 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2003-07-21 through 2025-06-04; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-01-05 through 2026-01-05; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 6 rows; 2020-11-17 through 2021-09-09; source ID `msha-area-samples`
- **Assessed Violations:** 227 rows; 2000-03-07 through 2025-09-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2023-05-17 through 2023-05-17; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2008-08-11 through 2012-03-22; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2022-10-24 through 2022-10-24; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,041 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 253 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1987-06-01 through 2019-10-01; source ID `msha-controller-operator-history`
- **Inspections:** 149 rows; 2000-03-07 through 2026-08-18; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 281 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 44 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:** 193 rows; 2002-11-14 through 2024-01-18; source ID `msha-personal-health-samples`
- **Violations:** 227 rows; 2000-03-07 through 2025-09-02; 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/eureka-underground-1202005`
- JSON: `/api/v1/mines/eureka-underground-1202005`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1202005/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1202005/relationships`
- MCP resource: `mine://1202005/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`