# Montevallo Quarry & Mill

- **MSHA mine ID:** 0100040
- **Status:** Active
- **Type / commodity:** Surface / Lime
- **Location:** Shelby, AL
- **Operator:** Lhoist North America of Alabama, LLC
- **Controller:** Lhoist Group
- **Public source rows linked:** 7,745
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Lhoist Group (0041044) → Lhoist North America of Alabama, LLC (L13586) → Montevallo Quarry & Mill (0100040)**

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

## Controller and operator valid-time history

- **M A  Rikard → Allied Products Company:** 1950-01-01 through 1989-07-30; derived from co-tenure at mine 0100040; source `msha-controller-operator-history`.
- **Chemical Lime Company → Lhoist North America of Alabama, LLC:** 1989-07-31 through 1998-12-30; derived from co-tenure at mine 0100040; source `msha-controller-operator-history`.
- **Lhoist Group → Lhoist North America of Alabama, LLC:** 1998-12-31 through current/open; derived from co-tenure at mine 0100040; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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 — 12 since 2021:** Accidents and injuries 122 historical accident/injury rows; 0 coded fatalities and 3,449 lost days across the published record.
2. **COMPLIANCE — 105 since 2021:** Violations and penalties 1,004 violation rows across the full record; 271 carry an S&S flag and $576,432 appears in current assessed amounts.
3. **HEALTH — 59 samples:** Occupational health samples 59 personal. 10 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 49K employee hours and 84 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 235 linked rows:** Contests, conferences and decisions 99 contested-violation rows, 101 civil-penalty docket/decision rows, and 35 conference records linked by issuance number.
6. **CONTRACTORS — 46 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 — 21 since 2021:** Inspections 168 inspection events and 6K 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 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.13011 — Air receiver tanks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13011
- **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 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 56.12034 — Guarding around lights.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12034
- **30 CFR 56.13021 — High-pressure hose connections.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13021
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 122 rows; 2000-01-05 through 2026-03-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1988-04-05 through 1988-04-05; source ID `msha-addresses`
- **Assessed Violations:** 973 rows; 2000-08-29 through 2026-02-10; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 101 rows; 2004-03-16 through 2024-07-11; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 35 rows; 2003-02-21 through 2024-05-20; source ID `msha-conferences`
- **Contested Violations:** 99 rows; 2007-11-20 through 2024-01-18; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 4,065 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 872 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1989-07-31; source ID `msha-controller-operator-history`
- **Inspections:** 168 rows; 2000-01-18 through 2026-08-31; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 199 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 43 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:** 59 rows; 2001-06-14 through 2025-09-19; source ID `msha-personal-health-samples`
- **Violations:** 1,004 rows; 2000-08-29 through 2026-09-03; 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/montevallo-quarry-mill-0100040`
- JSON: `/api/v1/mines/montevallo-quarry-mill-0100040`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0100040/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0100040/relationships`
- MCP resource: `mine://0100040/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`