# Amrize Larson Plant

- **MSHA mine ID:** 2100080
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Washington, MN
- **Operator:** AMRIZE MID-AMERICA INC.
- **Controller:** Amrize Ltd
- **Public source rows linked:** 1,856
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Amrize Ltd (0193740) → AMRIZE MID-AMERICA INC. (0107425) → Amrize Larson Plant (2100080)**

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

## Controller and operator valid-time history

- **J L Shiely  Company → J L Shiely Company:** 1950-01-01 through 1988-07-18; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **English China Clays PLC → Shiely Company:** 1988-07-19 through 1994-09-21; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Camas Plc → Shiely Company:** 1994-09-22 through 1997-05-13; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Camas Minnesota:** 1997-05-14 through 2002-03-04; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Aggregate Industries:** 2002-03-05 through 2003-11-25; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Amrize Midwest Inc.:** 2003-11-26 through 2009-04-29; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Holcim Ltd → Aggregate Industries:** 2009-04-30 through 2003-11-25; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize Midwest Inc.:** 2009-04-30 through 2015-07-09; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Holcim Ltd → Aggregate Industries:** 2015-07-10 through 2003-11-25; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize Midwest Inc.:** 2015-07-10 through 2025-06-22; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Amrize Ltd → Aggregate Industries:** 2025-06-23 through 2003-11-25; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Amrize Ltd → Amrize Midwest Inc.:** 2025-06-23 through 2026-04-14; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Holcim Ltd → AMRIZE MID-AMERICA INC.:** 2026-04-15 through 2025-06-22; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Amrize Ltd → AMRIZE MID-AMERICA INC.:** 2026-04-15 through current/open; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.
- **Lafarge S A → AMRIZE MID-AMERICA INC.:** 2026-04-15 through 2015-07-09; derived from co-tenure at mine 2100080; source `msha-controller-operator-history`.

- History rows: 15
- Typed edges: 32
- Interval anomalies: 5
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 3 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 593 lost days across the published record.
2. **COMPLIANCE — 33 since 2021:** Violations and penalties 175 violation rows across the full record; 29 carry an S&S flag and $30,408 appears in current assessed amounts.
3. **HEALTH — 117 samples:** Occupational health samples 117 personal. 2 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 10K employee hours and 16 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 6 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 — 19 since 2021:** Inspections 66 inspection events and 1K 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 56.12065 — Short circuit and lightning protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12065
- **30 CFR 56.16005 — Securing gas cylinders.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.14132 — 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 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.14105 — Procedures during repairs or maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14105
- **30 CFR 56.15014 — Eye protection when operating grinding wheels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15014
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2000-05-12 through 2026-06-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-05-14 through 2012-05-14; source ID `msha-addresses`
- **Assessed Violations:** 175 rows; 2000-03-09 through 2026-05-05; source ID `msha-assessed-violations`
- **Conferences:** 1 rows; 2021-03-18 through 2021-03-18; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 968 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 256 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 15 rows; 1950-01-01 through 2026-04-15; source ID `msha-controller-operator-history`
- **Inspections:** 66 rows; 2000-03-08 through 2026-05-04; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 13 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 53 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:** 117 rows; 2002-05-30 through 2026-02-03; source ID `msha-personal-health-samples`
- **Violations:** 175 rows; 2000-03-09 through 2026-05-05; 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/amrize-larson-plant-2100080`
- JSON: `/api/v1/mines/amrize-larson-plant-2100080`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2100080/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2100080/relationships`
- MCP resource: `mine://2100080/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`