# Miami Cement Plant

- **MSHA mine ID:** 0800046
- **Status:** Active
- **Type / commodity:** Facility / Cement
- **Location:** Miami-Dade, FL
- **Operator:** CEMEX Construction Materials Florida, LLC
- **Controller:** Cemex S A
- **Public source rows linked:** 7,934
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Cemex S A (M09149) → CEMEX Construction Materials Florida, LLC (0106585) → Miami Cement Plant (0800046)**

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

## Controller and operator valid-time history

- **Rinker M E → Rinker Portland Cement Corp:** 1950-01-01 through 1993-08-31; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **CSR Ltd → Rinker Materials Corp:** 1993-09-01 through 2002-11-30; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **CSR Ltd → Rinker Materials  of Florida Inc.:** 2002-12-01 through 2003-03-31; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Rinker Materials Corp:** 2003-04-01 through 2002-11-30; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Rinker Materials  of Florida Inc.:** 2003-04-01 through 2007-07-09; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **Cemex S A → Rinker Materials Corp:** 2007-07-10 through 2002-11-30; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **Cemex S A → Rinker Materials  of Florida Inc.:** 2007-07-10 through 2007-12-31; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Corp:** 2008-01-01 through 2009-03-04; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials Florida, LLC:** 2009-03-05 through current/open; derived from co-tenure at mine 0800046; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 21
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 12 since 2021:** Accidents and injuries 112 historical accident/injury rows; 0 coded fatalities and 1,502 lost days across the published record.
2. **COMPLIANCE — 252 since 2021:** Violations and penalties 1,028 violation rows across the full record; 317 carry an S&S flag and $591,141 appears in current assessed amounts.
3. **HEALTH — 83 samples:** Occupational health samples 83 personal. 1 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 88K employee hours and 141 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 618 linked rows:** Contests, conferences and decisions 296 contested-violation rows, 298 civil-penalty docket/decision rows, and 24 conference records linked by issuance number.
6. **CONTRACTORS — 39 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 — 37 since 2021:** Inspections 123 inspection events and 6K 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 56.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 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 56.20003 — 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 56.12028 — 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 56.11006 — Fixed ladder landings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11006
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **30 CFR 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 112 rows; 2000-01-10 through 2026-05-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-03-05 through 2009-03-05; source ID `msha-addresses`
- **Assessed Violations:** 1,022 rows; 2000-01-26 through 2026-04-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 298 rows; 2001-01-23 through 2026-05-13; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 24 rows; 2000-02-24 through 2015-08-27; source ID `msha-conferences`
- **Contested Violations:** 296 rows; 2007-04-25 through 2025-12-10; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 4,053 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 806 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1950-01-01 through 2009-03-05; source ID `msha-controller-operator-history`
- **Inspections:** 123 rows; 2000-01-25 through 2026-07-28; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 83 rows; 2001-07-12 through 2025-03-26; source ID `msha-personal-health-samples`
- **Violations:** 1,028 rows; 2000-01-26 through 2026-04-02; 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/miami-cement-plant-0800046`
- JSON: `/api/v1/mines/miami-cement-plant-0800046`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0800046/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0800046/relationships`
- MCP resource: `mine://0800046/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`