# HICKORY QUARRY

- **MSHA mine ID:** 3100043
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Granite
- **Location:** Catawba, NC
- **Operator:** Martin Marietta Materials Inc
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 1,641
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials Inc (L16197) → HICKORY QUARRY (3100043)**

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

## Controller and operator valid-time history

- **Martin Marietta Materials Inc → Martin Marietta Aggregates:** 1950-01-01 through 2005-06-23; derived from co-tenure at mine 3100043; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials Inc:** 2005-06-24 through current/open; derived from co-tenure at mine 3100043; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 7 historical accident/injury rows; 0 coded fatalities and 61 lost days across the published record.
2. **COMPLIANCE — 10 since 2021:** Violations and penalties 157 violation rows across the full record; 33 carry an S&S flag and $39,758 appears in current assessed amounts.
3. **HEALTH — 55 samples:** Occupational health samples 55 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 12K employee hours and 20 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 12 linked rows:** Contests, conferences and decisions 5 contested-violation rows, 5 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
6. **CONTRACTORS — 10 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 — 16 since 2021:** Inspections 85 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 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.14207 — 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 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **30 CFR 56.14112 — Construction and maintenance of guards.** (3 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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2000-07-10 through 2025-05-14; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1972-12-14 through 1972-12-14; source ID `msha-addresses`
- **Assessed Violations:** 154 rows; 2000-03-14 through 2026-01-15; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 5 rows; 2006-10-16 through 2007-03-16; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2014-06-16 through 2020-03-31; source ID `msha-conferences`
- **Contested Violations:** 5 rows; 2006-04-11 through 2006-04-13; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 618 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 150 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 2005-06-24; source ID `msha-controller-operator-history`
- **Inspections:** 85 rows; 2000-03-13 through 2026-09-15; 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:** 55 rows; 2001-02-07 through 2025-07-01; source ID `msha-personal-health-samples`
- **Violations:** 157 rows; 2000-03-14 through 2026-09-15; 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/hickory-quarry-3100043`
- JSON: `/api/v1/mines/hickory-quarry-3100043`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3100043/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3100043/relationships`
- MCP resource: `mine://3100043/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`