# CEMEX - WEST PLANT #72

- **MSHA mine ID:** 0201037
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Maricopa, AZ
- **Operator:** CEMEX Construction Materials South LLC
- **Controller:** Cemex S A
- **Public source rows linked:** 722
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Cemex S A (M09149) → CEMEX Construction Materials South LLC (0093625) → CEMEX - WEST PLANT #72 (0201037)**

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

## Controller and operator valid-time history

- **Ed  Johnson → Johnson-Stewart-Johnson Mining Company Inc:** 1950-01-01 through 1986-07-20; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.
- **Blue Circle Industries Plc → Blue Circle West:** 1986-07-21 through 1989-07-31; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.
- **Empresas Tolteca → B C W Inc:** 1989-08-01 through 1990-09-30; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.
- **Cemex S A → Sunward Materials:** 1990-10-01 through 2001-07-11; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Construction Materials Inc.:** 2001-07-12 through 2003-08-11; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Construction Materials LP:** 2003-08-12 through 2008-07-31; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials South LLC:** 2008-08-01 through current/open; derived from co-tenure at mine 0201037; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 20
- 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 — 0 since 2021:** Accidents and injuries 5 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 137 violation rows across the full record; 29 carry an S&S flag and $35,464 appears in current assessed amounts.
3. **HEALTH — 10 samples:** Occupational health samples 10 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 1K employee hours and 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 29 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 23 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 12 since 2021:** Inspections 53 inspection events and 704 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 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **30 CFR 56.18009 — Designation of person in charge.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18009
- **30 CFR 56.14101 — Brakes.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **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 56.14103 — Operators stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103
- **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 56.14112 — 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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.14206 — Securing movable parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14206
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2002-04-05 through 2010-05-04; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-01-20 through 2025-01-20; source ID `msha-addresses`
- **Assessed Violations:** 137 rows; 2000-03-31 through 2024-09-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2011-06-15 through 2011-06-15; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 23 rows; 2000-04-20 through 2003-05-29; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2010-04-06 through 2010-04-07; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 107 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 23 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2008-08-01; source ID `msha-controller-operator-history`
- **Inspections:** 53 rows; 2000-03-31 through 2025-01-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 168 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 44 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:** 10 rows; 2004-08-05 through 2020-02-25; source ID `msha-personal-health-samples`
- **Violations:** 137 rows; 2000-03-31 through 2024-09-05; 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/cemex-west-plant-72-0201037`
- JSON: `/api/v1/mines/cemex-west-plant-72-0201037`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0201037/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0201037/relationships`
- MCP resource: `mine://0201037/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`