# Martinsburg

- **MSHA mine ID:** 4600007
- **Status:** Active
- **Type / commodity:** Facility / Cement
- **Location:** Berkeley, WV
- **Operator:** Quikrete Construction Materials, LLC
- **Controller:** Quikrete Holdings Inc.
- **Public source rows linked:** 25,007
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Quikrete Holdings Inc. (M12812) → Quikrete Construction Materials, LLC (0119988) → Martinsburg (4600007)**

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 Cement:** 1950-01-01 through 1984-03-13; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Capitol Materials Corporation → Capitol Cement Corp:** 1984-03-14 through 2002-05-20; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Italcementi Spa → Capitol Cement Corp:** 2002-05-21 through 2003-08-20; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Italcementi Spa → Essroc Cement Corp.:** 2003-08-21 through 2016-10-11; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Essroc Cement Corp.:** 2016-10-12 through 2016-11-30; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Cementos Argos S A → Quikrete Construction Materials, LLC:** 2016-12-01 through 2023-01-11; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Summit Materials LLC → Quikrete Construction Materials, LLC:** 2023-01-12 through 2025-08-03; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.
- **Quikrete Holdings Inc. → Quikrete Construction Materials, LLC:** 2025-08-04 through current/open; derived from co-tenure at mine 4600007; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 20
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 24 since 2021:** Accidents and injuries 249 historical accident/injury rows; 1 coded fatalities and 5,310 lost days across the published record.
2. **COMPLIANCE — 907 since 2021:** Violations and penalties 3,652 violation rows across the full record; 851 carry an S&S flag and $2,882,796 appears in current assessed amounts.
3. **HEALTH — 171 samples:** Occupational health samples 168 personal; 3 area. 28 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 102K employee hours and 203 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2,559 linked rows:** Contests, conferences and decisions 1,202 contested-violation rows, 1,194 civil-penalty docket/decision rows, and 163 conference records linked by issuance number.
6. **CONTRACTORS — 128 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 — 42 since 2021:** Inspections 332 inspection events and 18K 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 56.12028 — 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 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.14100 — 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 56.14132 — 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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **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
- **30 CFR 46.9 — Records of training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130

## Source coverage

- **Accident, Injuries, and Illnesses:** 249 rows; 2000-02-08 through 2026-07-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1976-03-10 through 1976-03-10; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 3 rows; 2004-12-29 through 2024-03-08; source ID `msha-area-samples`
- **Assessed Violations:** 3,567 rows; 2000-04-03 through 2026-08-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1,194 rows; 2001-12-28 through 2026-08-06; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 163 rows; 2000-10-12 through 2023-06-26; source ID `msha-conferences`
- **Contested Violations:** 1,202 rows; 2002-01-24 through 2026-01-22; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 11,849 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 2,501 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2016-12-01; source ID `msha-controller-operator-history`
- **Inspections:** 332 rows; 2000-01-31 through 2026-09-21; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 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:** 168 rows; 2001-07-17 through 2026-01-21; source ID `msha-personal-health-samples`
- **Violations:** 3,652 rows; 2000-04-03 through 2026-08-05; 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/martinsburg-4600007`
- JSON: `/api/v1/mines/martinsburg-4600007`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4600007/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4600007/relationships`
- MCP resource: `mine://4600007/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`