# Amrize Pit  #52

- **MSHA mine ID:** 2101277
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Clay, MN
- **Operator:** AMRIZE MID-AMERICA INC.
- **Controller:** Amrize Ltd
- **Public source rows linked:** 548
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Amrize Ltd (0193740) → AMRIZE MID-AMERICA INC. (0107425) → Amrize Pit  #52 (2101277)**

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

## Controller and operator valid-time history

- **Kost Brothers Inc → Kost Brothers Inc:** 1980-04-01 through 1994-02-28; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Camas Plc → Camas Minndak Inc:** 1994-03-01 through 1997-05-13; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Camas Minndak Inc:** 1997-05-14 through 2002-03-06; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Aggregate Industries, Inc.:** 2002-03-07 through 2003-11-25; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Amrize Midwest Inc.:** 2003-11-26 through 2009-04-29; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Holcim Ltd → Aggregate Industries, Inc.:** 2009-04-30 through 2003-11-25; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize Midwest Inc.:** 2009-04-30 through 2015-07-09; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Holcim Ltd → Aggregate Industries, Inc.:** 2015-07-10 through 2003-11-25; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize Midwest Inc.:** 2015-07-10 through 2025-06-22; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Amrize Ltd → Aggregate Industries, Inc.:** 2025-06-23 through 2003-11-25; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Amrize Ltd → Amrize Midwest Inc.:** 2025-06-23 through 2026-04-14; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Holcim Ltd → AMRIZE MID-AMERICA INC.:** 2026-04-15 through 2025-06-22; derived from co-tenure at mine 2101277; source `msha-controller-operator-history`.
- **Amrize Ltd → AMRIZE MID-AMERICA INC.:** 2026-04-15 through current/open; derived from co-tenure at mine 2101277; 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 2101277; source `msha-controller-operator-history`.

- History rows: 14
- Typed edges: 29
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 13 historical accident/injury rows; 0 coded fatalities and 38 lost days across the published record.
2. **COMPLIANCE — 12 since 2021:** Violations and penalties 108 violation rows across the full record; 21 carry an S&S flag and $28,180 appears in current assessed amounts.
3. **HEALTH — 20 samples:** Occupational health samples 20 personal. 0 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 8K employee hours and 14 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 15 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 7 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 8 since 2021:** Inspections 47 inspection events and 637 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 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
- **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 56.14112 — 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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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
- **30 CFR 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **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 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.14132 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 13 rows; 2001-08-28 through 2017-10-04; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1980-06-18 through 1980-06-18; source ID `msha-addresses`
- **Assessed Violations:** 105 rows; 2001-05-09 through 2023-10-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2011-04-04 through 2011-04-04; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2012-11-13 through 2012-11-13; source ID `msha-conferences`
- **Contested Violations:** 7 rows; 2009-10-27 through 2009-11-03; source ID `msha-contested-violations`
- **Controller and Operator History:** 14 rows; 1980-04-01 through 2026-04-15; source ID `msha-controller-operator-history`
- **Inspections:** 47 rows; 2000-11-20 through 2026-09-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 178 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 46 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:** 20 rows; 2002-10-29 through 2023-08-23; source ID `msha-personal-health-samples`
- **Violations:** 108 rows; 2001-05-09 through 2026-09-02; 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-pit-52-2101277`
- JSON: `/api/v1/mines/amrize-pit-52-2101277`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2101277/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2101277/relationships`
- MCP resource: `mine://2101277/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`