# Brooksville Quarry

- **MSHA mine ID:** 0800024
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Hernando, FL
- **Operator:** CEMEX Construction Materials Florida, LLC
- **Controller:** Cemex S A
- **Public source rows linked:** 3,474
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Cemex S A (M09149) → CEMEX Construction Materials Florida, LLC (0106585) → Brooksville Quarry (0800024)**

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

## Controller and operator valid-time history

- **F Browne Gregg Trust → Florida Crushed Stone Company:** 1950-01-01 through 2000-07-21; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **CSR Ltd → Rinker Materials Of Florida, Inc:** 2000-07-22 through 2003-03-31; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Rinker Materials Of Florida, Inc:** 2003-04-01 through 2003-06-30; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **Rinker Group Ltd → Florida Crushed Stone:** 2003-07-01 through 2007-07-09; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **CSR Ltd → Florida Crushed Stone:** 2003-07-01 through 2003-03-31; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **Cemex S A → Rinker Materials Of Florida, Inc:** 2007-07-10 through 2003-06-30; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **Cemex S A → Florida Crushed Stone:** 2007-07-10 through 2008-12-18; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.
- **Cemex S A → CEMEX Construction Materials Florida, LLC:** 2008-12-19 through current/open; derived from co-tenure at mine 0800024; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 18
- 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 — 7 since 2021:** Accidents and injuries 65 historical accident/injury rows; 1 coded fatalities and 1,136 lost days across the published record.
2. **COMPLIANCE — 49 since 2021:** Violations and penalties 218 violation rows across the full record; 55 carry an S&S flag and $184,346 appears in current assessed amounts.
3. **HEALTH — 46 samples:** Occupational health samples 46 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 80K employee hours and 130 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 33 linked rows:** Contests, conferences and decisions 13 contested-violation rows, 13 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 16 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 — 31 since 2021:** Inspections 106 inspection events and 3K 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 56.14100 — 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 56.18002 — Examination of working places.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **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 46.8 — Annual refresher training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **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 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.9101 — Operating speeds and control of equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9101

## Source coverage

- **Accident, Injuries, and Illnesses:** 65 rows; 2000-04-03 through 2024-09-06; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-12-19 through 2008-12-19; source ID `msha-addresses`
- **Assessed Violations:** 217 rows; 2000-02-01 through 2025-02-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 13 rows; 2011-01-05 through 2025-02-28; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2001-01-19 through 2022-10-18; source ID `msha-conferences`
- **Contested Violations:** 13 rows; 2010-01-11 through 2024-09-11; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,951 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 429 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2008-12-19; source ID `msha-controller-operator-history`
- **Inspections:** 106 rows; 2000-02-01 through 2026-09-21; 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:** 46 rows; 2003-08-14 through 2026-09-22; source ID `msha-personal-health-samples`
- **Violations:** 218 rows; 2000-02-01 through 2025-02-25; 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/brooksville-quarry-0800024`
- JSON: `/api/v1/mines/brooksville-quarry-0800024`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0800024/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0800024/relationships`
- MCP resource: `mine://0800024/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`