# Georgia Stone, Buckhorn Plant

- **MSHA mine ID:** 3800715
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Granite
- **Location:** Chesterfield, SC
- **Operator:** Georgia Stone Products, LLC
- **Controller:** Quikrete Construction Materials, LLC
- **Public source rows linked:** 1,988
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Quikrete Construction Materials, LLC (0194702) → Georgia Stone Products, LLC (0154493) → Georgia Stone, Buckhorn Plant (3800715)**

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

## Controller and operator valid-time history

- **Joseph H  Anderson et al → Buckhorn Materials LLC:** 2007-01-10 through 2014-06-29; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **Summit Materials LLC → Buckhorn Materials LLC:** 2014-06-30 through 2016-12-31; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **Summit Materials LLC → American Materials Company, LLC:** 2017-01-01 through 2021-02-14; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **Gary (Tim)  Bizzell  et al → American Materials Company, LLC:** 2017-01-01 through 2016-02-04; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **Summit Materials LLC → Georgia Stone Products, LLC:** 2021-02-15 through 2025-02-09; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **CRH PLC → Buckhorn Materials LLC:** 2022-05-14 through 2016-12-31; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **Quikrete Construction Materials, LLC → Georgia Stone Products, LLC:** 2025-02-10 through current/open; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.
- **Quikrete Holdings Inc. → American Materials Company, LLC:** 2025-08-04 through 2021-02-14; derived from co-tenure at mine 3800715; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 20
- Interval anomalies: 3
- 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 — 1 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 345 lost days across the published record.
2. **COMPLIANCE — 28 since 2021:** Violations and penalties 150 violation rows across the full record; 50 carry an S&S flag and $79,602 appears in current assessed amounts.
3. **HEALTH — 47 samples:** Occupational health samples 47 personal. 2 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 24K employee hours and 24 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 26 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 10 civil-penalty docket/decision rows, and 5 conference records linked by issuance number.
6. **CONTRACTORS — 13 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 — 19 since 2021:** Inspections 65 inspection events and 1K 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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **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 56.14100 — 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 56.6202 — Vehicles.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6202

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2007-12-01 through 2026-09-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2007-09-28 through 2007-09-28; source ID `msha-addresses`
- **Assessed Violations:** 150 rows; 2007-06-19 through 2025-11-04; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 10 rows; 2012-05-22 through 2012-05-22; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 5 rows; 2019-01-31 through 2021-01-04; source ID `msha-conferences`
- **Contested Violations:** 11 rows; 2010-05-27 through 2011-10-28; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,073 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 256 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 8 rows; 2007-01-10 through 2021-02-15; source ID `msha-controller-operator-history`
- **Inspections:** 65 rows; 2007-06-19 through 2026-06-10; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 156 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 40 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:** 47 rows; 2008-11-13 through 2023-07-26; source ID `msha-personal-health-samples`
- **Violations:** 150 rows; 2007-06-19 through 2025-11-04; 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/georgia-stone-buckhorn-plant-3800715`
- JSON: `/api/v1/mines/georgia-stone-buckhorn-plant-3800715`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3800715/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3800715/relationships`
- MCP resource: `mine://3800715/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`