# MLC - Ste. Genevieve

- **MSHA mine ID:** 2300542
- **Status:** Active
- **Type / commodity:** Underground / Lime
- **Location:** Ste Genevieve, MO
- **Operator:** MLC
- **Controller:** HBM Holdings Company
- **Public source rows linked:** 18,291
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**HBM Holdings Company (0172040) → MLC (L01289) → MLC - Ste. Genevieve (2300542)**

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

## Controller and operator valid-time history

- **Margaret J  Heckman  et al → MLC:** 1950-01-01 through 2022-09-06; derived from co-tenure at mine 2300542; source `msha-controller-operator-history`.
- **HBM Holdings Company → MLC:** 2022-09-07 through current/open; derived from co-tenure at mine 2300542; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 — 70 since 2021:** Accidents and injuries 428 historical accident/injury rows; 4 coded fatalities and 11,568 lost days across the published record.
2. **COMPLIANCE — 850 since 2021:** Violations and penalties 2,722 violation rows across the full record; 546 carry an S&S flag and $2,129,924 appears in current assessed amounts.
3. **HEALTH — 403 samples:** Occupational health samples 389 personal; 14 area. 16 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 321K employee hours and 650 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 892 linked rows:** Contests, conferences and decisions 430 contested-violation rows, 434 civil-penalty docket/decision rows, and 28 conference records linked by issuance number.
6. **CONTRACTORS — 71 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 — 74 since 2021:** Inspections 306 inspection events and 22K 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 57.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4200
- **30 CFR 57.16007 — Taglines, hitches, and slings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-O/section-57.16007
- **30 CFR 57.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14107
- **30 CFR 57.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20003
- **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
- **30 CFR 57.12001 — Circuit overload protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12001
- **30 CFR 57.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-Q/section-57.18002

## Source coverage

- **Accident, Injuries, and Illnesses:** 428 rows; 2000-01-07 through 2026-09-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1984-06-15 through 1984-06-15; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 14 rows; 2022-09-13 through 2025-09-09; source ID `msha-area-samples`
- **Assessed Violations:** 2,684 rows; 2000-02-09 through 2026-08-11; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 434 rows; 2004-03-05 through 2026-09-30; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 28 rows; 2002-05-17 through 2026-07-31; source ID `msha-conferences`
- **Contested Violations:** 430 rows; 2007-06-15 through 2026-04-13; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 8,589 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,801 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 306 rows; 2000-01-25 through 2026-10-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 379 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 83 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:** 389 rows; 2000-08-30 through 2026-07-07; source ID `msha-personal-health-samples`
- **Violations:** 2,722 rows; 2000-02-09 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/mlc-ste-genevieve-2300542`
- JSON: `/api/v1/mines/mlc-ste-genevieve-2300542`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2300542/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2300542/relationships`
- MCP resource: `mine://2300542/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`