# Lawrenceburg Quarry & Mill

- **MSHA mine ID:** 4001250
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Lawrence, TN
- **Operator:** Rogers Group Inc
- **Controller:** Rogers Group Inc
- **Public source rows linked:** 1,877
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Rogers Group Inc (M00452) → Rogers Group Inc (L06514) → Lawrenceburg Quarry & Mill (4001250)**

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

## Controller and operator valid-time history

- **M Glenn  West → M C West Inc:** 1950-01-01 through 1983-06-06; derived from co-tenure at mine 4001250; source `msha-controller-operator-history`.
- **Rogers Group Inc → Rogers Group Inc:** 1983-06-07 through current/open; derived from co-tenure at mine 4001250; 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 — 1 since 2021:** Accidents and injuries 7 historical accident/injury rows; 0 coded fatalities and 35 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 111 violation rows across the full record; 33 carry an S&S flag and $30,054 appears in current assessed amounts.
3. **HEALTH — 46 samples:** Occupational health samples 46 personal. 3 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 7 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 45 linked rows:** Contests, conferences and decisions 20 contested-violation rows, 20 civil-penalty docket/decision rows, and 5 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 — 13 since 2021:** Inspections 63 inspection events and 881 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 56.20013 — Waste receptacles.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20013
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.14107 — Moving machine parts.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **30 CFR 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2000-07-12 through 2025-05-06; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-09-05 through 2013-09-05; source ID `msha-addresses`
- **Assessed Violations:** 110 rows; 2000-04-12 through 2017-07-13; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 20 rows; 2011-05-18 through 2012-11-27; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 5 rows; 2004-04-28 through 2010-09-23; source ID `msha-conferences`
- **Contested Violations:** 20 rows; 2009-03-05 through 2011-11-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 935 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 174 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 1983-06-07; source ID `msha-controller-operator-history`
- **Inspections:** 63 rows; 2000-04-12 through 2026-05-04; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 303 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 79 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:** 46 rows; 2001-10-02 through 2024-12-04; source ID `msha-personal-health-samples`
- **Violations:** 111 rows; 2000-04-12 through 2017-07-13; 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/lawrenceburg-quarry-mill-4001250`
- JSON: `/api/v1/mines/lawrenceburg-quarry-mill-4001250`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4001250/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4001250/relationships`
- MCP resource: `mine://4001250/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`