# Skippers

- **MSHA mine ID:** 4400136
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Granite
- **Location:** Greensville, VA
- **Operator:** Vulcan Construction Materials, LLC
- **Controller:** Vulcan Materials Company
- **Public source rows linked:** 2,493
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Vulcan Materials Company (0071891) → Vulcan Construction Materials, LLC (L16168) → Skippers (4400136)**

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

## Controller and operator valid-time history

- **Boxley Materials Co → Trego Stone Corp:** 1950-01-01 through 1991-08-21; derived from co-tenure at mine 4400136; source `msha-controller-operator-history`.
- **Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC:** 1991-08-22 through 2007-11-15; derived from co-tenure at mine 4400136; source `msha-controller-operator-history`.
- **Vulcan Materials Company → Vulcan Construction Materials, LLC:** 2007-11-16 through current/open; derived from co-tenure at mine 4400136; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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 — 4 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 124 lost days across the published record.
2. **COMPLIANCE — 2 since 2021:** Violations and penalties 85 violation rows across the full record; 12 carry an S&S flag and $11,418 appears in current assessed amounts.
3. **HEALTH — 63 samples:** Occupational health samples 63 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 27K employee hours and 48 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 37 linked rows:** Contests, conferences and decisions 15 contested-violation rows, 15 civil-penalty docket/decision rows, and 7 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 — 15 since 2021:** Inspections 65 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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.13015 — Inspection of compressed-air receivers and other unfired pressure vessels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13015
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **30 CFR 56.13010 — Reciprocating-type air compressors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13010
- **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 56.14101 — 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 56.13011 — Air receiver tanks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13011
- **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 56.14132 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2000-05-05 through 2024-02-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1979-05-23 through 1979-05-23; source ID `msha-addresses`
- **Assessed Violations:** 84 rows; 2001-04-10 through 2023-08-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 15 rows; 2008-10-29 through 2020-03-09; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2002-01-29 through 2018-09-06; source ID `msha-conferences`
- **Contested Violations:** 15 rows; 2007-09-06 through 2019-05-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,411 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 332 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1991-08-22; source ID `msha-controller-operator-history`
- **Inspections:** 65 rows; 2000-01-27 through 2026-04-13; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 315 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:** 63 rows; 2001-04-11 through 2026-04-15; source ID `msha-personal-health-samples`
- **Violations:** 85 rows; 2001-04-10 through 2023-08-02; 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/skippers-4400136`
- JSON: `/api/v1/mines/skippers-4400136`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4400136/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4400136/relationships`
- MCP resource: `mine://4400136/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`