# Crabtree Quarry

- **MSHA mine ID:** 3100079
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Granite
- **Location:** Wake, NC
- **Operator:** Heidelberg Materials, Southeast Agg., LLC
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 3,278
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials, Southeast Agg., LLC (L16897) → Crabtree Quarry (3100079)**

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

## Controller and operator valid-time history

- **Nello L  Teer Jr et al → Nello L Teer Company:** 1950-01-01 through 1980-04-14; derived from co-tenure at mine 3100079; source `msha-controller-operator-history`.
- **Koppers Company Inc → Nello L Teer Company:** 1980-04-15 through 1988-11-13; derived from co-tenure at mine 3100079; source `msha-controller-operator-history`.
- **Hanson PLC → Hanson Aggregates Carolina Inc:** 1988-11-14 through 2002-05-07; derived from co-tenure at mine 3100079; source `msha-controller-operator-history`.
- **Hanson PLC → Heidelberg Materials, Southeast Agg., LLC:** 2002-05-08 through 2007-08-22; derived from co-tenure at mine 3100079; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials, Southeast Agg., LLC:** 2007-08-23 through current/open; derived from co-tenure at mine 3100079; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 25 historical accident/injury rows; 0 coded fatalities and 659 lost days across the published record.
2. **COMPLIANCE — 45 since 2021:** Violations and penalties 197 violation rows across the full record; 54 carry an S&S flag and $73,713 appears in current assessed amounts.
3. **HEALTH — 58 samples:** Occupational health samples 58 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 8K employee hours and 14 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 45 linked rows:** Contests, conferences and decisions 22 contested-violation rows, 22 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 19 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 — 15 since 2021:** Inspections 96 inspection events and 2K 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 56.14207 — 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 56.14112 — 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 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205
- **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 56.20014 — Prohibited areas for food and beverages.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20014
- **30 CFR 56.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23002
- **30 CFR 56.12020 — Protection of persons at switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12020
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 25 rows; 2000-11-08 through 2026-05-21; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1976-07-04 through 1976-07-04; source ID `msha-addresses`
- **Assessed Violations:** 194 rows; 2000-03-14 through 2026-07-22; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 22 rows; 2006-10-10 through 2022-01-07; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2021-05-05 through 2021-05-05; source ID `msha-conferences`
- **Contested Violations:** 22 rows; 2006-01-11 through 2021-02-04; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,831 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 426 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2002-05-08; source ID `msha-controller-operator-history`
- **Inspections:** 96 rows; 2000-03-14 through 2026-07-22; 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:** 58 rows; 2002-09-24 through 2024-08-27; source ID `msha-personal-health-samples`
- **Violations:** 197 rows; 2000-03-14 through 2026-07-22; 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/crabtree-quarry-3100079`
- JSON: `/api/v1/mines/crabtree-quarry-3100079`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3100079/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3100079/relationships`
- MCP resource: `mine://3100079/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`