# Mitchell Plant

- **MSHA mine ID:** 1200063
- **Status:** Active
- **Type / commodity:** Surface / Cement
- **Location:** Lawrence, IN
- **Operator:** Heidelberg Materials US Cement LLC
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 13,781
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials US Cement LLC (L17551) → Mitchell Plant (1200063)**

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

## Controller and operator valid-time history

- **Heidelberg Materials AG → Lehigh Portland Cement Company:** 1950-01-01 through 2002-02-01; derived from co-tenure at mine 1200063; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials US Cement LLC:** 2002-02-02 through current/open; derived from co-tenure at mine 1200063; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 — 46 since 2021:** Accidents and injuries 229 historical accident/injury rows; 0 coded fatalities and 1,488 lost days across the published record.
2. **COMPLIANCE — 533 since 2021:** Violations and penalties 1,582 violation rows across the full record; 324 carry an S&S flag and $1,251,319 appears in current assessed amounts.
3. **HEALTH — 179 samples:** Occupational health samples 127 personal; 52 area. 29 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 108K employee hours and 185 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 952 linked rows:** Contests, conferences and decisions 445 contested-violation rows, 447 civil-penalty docket/decision rows, and 60 conference records linked by issuance number.
6. **CONTRACTORS — 54 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 — 82 since 2021:** Inspections 225 inspection events and 10K 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 56.9101 — Operating speeds and control of equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9101
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 56.9313 — Roadway maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9313
- **30 CFR 56.9301 — Dump site restraints.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **30 CFR 56.14107 — Moving machine parts.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.20003 — Housekeeping.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.9315 — Dust control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9315

## Source coverage

- **Accident, Injuries, and Illnesses:** 229 rows; 2000-01-15 through 2026-06-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1979-02-07 through 1979-02-07; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 52 rows; 2022-08-29 through 2025-09-11; source ID `msha-area-samples`
- **Assessed Violations:** 1,573 rows; 2000-01-13 through 2026-08-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 447 rows; 2012-08-07 through 2026-06-18; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 60 rows; 2000-02-22 through 2024-05-29; source ID `msha-conferences`
- **Contested Violations:** 445 rows; 2011-09-28 through 2026-07-16; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 7,087 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,551 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 2002-02-02; source ID `msha-controller-operator-history`
- **Inspections:** 225 rows; 2000-01-13 through 2026-09-21; 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`
- **Metal and Nonmetal Personal Health Samples:** 127 rows; 2001-09-12 through 2025-09-11; source ID `msha-personal-health-samples`
- **Violations:** 1,582 rows; 2000-01-13 through 2026-09-21; 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/mitchell-plant-1200063`
- JSON: `/api/v1/mines/mitchell-plant-1200063`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1200063/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1200063/relationships`
- MCP resource: `mine://1200063/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`