# Amrize Solberg Pit

- **MSHA mine ID:** 0504889
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** El Paso, CO
- **Operator:** Amrize West Central Inc.
- **Controller:** Amrize Ltd
- **Public source rows linked:** 461
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Amrize Ltd (0193740) → Amrize West Central Inc. (L17266) → Amrize Solberg Pit (0504889)**

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

## Controller and operator valid-time history

- **Gary  Schnurr → Pioneer Sand Co Inc:** 2007-12-18 through 2014-12-31; derived from co-tenure at mine 0504889; source `msha-controller-operator-history`.
- **JLL Partners Incorporated → Pioneer Sand Co Inc:** 2015-01-01 through 2023-02-19; derived from co-tenure at mine 0504889; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize West Central Inc.:** 2023-02-20 through 2025-06-22; derived from co-tenure at mine 0504889; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize West Central Inc.:** 2023-02-20 through 2015-07-09; derived from co-tenure at mine 0504889; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Amrize West Central Inc.:** 2023-02-20 through 2009-04-29; derived from co-tenure at mine 0504889; source `msha-controller-operator-history`.
- **Amrize Ltd → Amrize West Central Inc.:** 2025-06-23 through current/open; derived from co-tenure at mine 0504889; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 14
- Interval anomalies: 2
- 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 2 historical accident/injury rows; 0 coded fatalities and 2 lost days across the published record.
2. **COMPLIANCE — 52 since 2021:** Violations and penalties 103 violation rows across the full record; 25 carry an S&S flag and $37,334 appears in current assessed amounts.
3. **HEALTH — 14 samples:** Occupational health samples 14 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 3K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 0 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 — 17 since 2021:** Inspections 47 inspection events and 711 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 56.14112 — 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 56.4201 — Inspection.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **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 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **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 56.20003 — 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 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2016-10-25 through 2018-08-30; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-10-04 through 2011-10-04; source ID `msha-addresses`
- **Assessed Violations:** 100 rows; 2008-03-10 through 2026-06-10; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2024-12-30 through 2024-12-30; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 1 rows; 2023-04-11 through 2023-04-11; source ID `msha-contested-violations`
- **Controller and Operator History:** 6 rows; 2007-12-18 through 2023-02-20; source ID `msha-controller-operator-history`
- **Inspections:** 47 rows; 2008-03-10 through 2026-06-09; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 147 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 38 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:** 14 rows; 2010-09-09 through 2023-04-18; source ID `msha-personal-health-samples`
- **Violations:** 103 rows; 2008-03-10 through 2026-06-10; 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-solberg-pit-0504889`
- JSON: `/api/v1/mines/amrize-solberg-pit-0504889`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0504889/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0504889/relationships`
- MCP resource: `mine://0504889/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`