# Amrize Portland Plant

- **MSHA mine ID:** 0500037
- **Status:** Active
- **Type / commodity:** Facility / Cement
- **Location:** Fremont, CO
- **Operator:** Amrize Cement Inc.
- **Controller:** Amrize Ltd
- **Public source rows linked:** 14,619
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Amrize Ltd (0193740) → Amrize Cement Inc. (0051046) → Amrize Portland Plant (0500037)**

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

## Controller and operator valid-time history

- **Ideal Basic Industries Inc → Ideal Basic Industries Inc:** 1950-01-01 through 1989-06-14; derived from co-tenure at mine 0500037; source `msha-controller-operator-history`.
- **Holcim Ltd → Holnam Inc:** 1989-06-15 through 2001-12-18; derived from co-tenure at mine 0500037; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize Cement Inc.:** 2001-12-19 through 2015-07-09; derived from co-tenure at mine 0500037; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize Cement Inc.:** 2015-07-10 through 2025-06-22; derived from co-tenure at mine 0500037; source `msha-controller-operator-history`.
- **Amrize Ltd → Amrize Cement Inc.:** 2025-06-23 through current/open; derived from co-tenure at mine 0500037; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 27 since 2021:** Accidents and injuries 197 historical accident/injury rows; 1 coded fatalities and 1,445 lost days across the published record.
2. **COMPLIANCE — 837 since 2021:** Violations and penalties 2,162 violation rows across the full record; 526 carry an S&S flag and $3,914,163 appears in current assessed amounts.
3. **HEALTH — 267 samples:** Occupational health samples 266 personal; 1 area. 7 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 99K employee hours and 198 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1,099 linked rows:** Contests, conferences and decisions 435 contested-violation rows, 496 civil-penalty docket/decision rows, and 168 conference records linked by issuance number.
6. **CONTRACTORS — 59 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 — 50 since 2021:** Inspections 160 inspection events and 12K 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 46.9 — Records of training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **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 56.12018 — Identification of power switches.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **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 56.12013 — Splices and repairs of power cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12013
- **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 56.12005 — Protection of power conductors from mobile equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12005
- **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 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 46.3 — Training plans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.3

## Source coverage

- **Accident, Injuries, and Illnesses:** 197 rows; 2000-01-17 through 2026-09-10; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1983-08-09 through 1983-08-09; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 1 rows; 2024-08-08 through 2024-08-08; source ID `msha-area-samples`
- **Assessed Violations:** 2,125 rows; 2000-05-09 through 2026-08-20; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 496 rows; 2000-09-08 through 2026-03-12; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 168 rows; 2000-06-28 through 2025-07-24; source ID `msha-conferences`
- **Contested Violations:** 435 rows; 2003-01-24 through 2025-07-23; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 6,665 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 1,538 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2001-12-19; source ID `msha-controller-operator-history`
- **Inspections:** 160 rows; 2000-05-03 through 2026-08-31; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 266 rows; 2000-08-02 through 2025-07-29; source ID `msha-personal-health-samples`
- **Violations:** 2,162 rows; 2000-05-09 through 2026-08-20; 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-portland-plant-0500037`
- JSON: `/api/v1/mines/amrize-portland-plant-0500037`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0500037/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0500037/relationships`
- MCP resource: `mine://0500037/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`