# Puddledock Sand & Gravel

- **MSHA mine ID:** 4402424
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Prince George, VA
- **Operator:** Vulcan Construction Materials, LLC
- **Controller:** Vulcan Materials Company
- **Public source rows linked:** 1,902
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Vulcan Materials Company (0071891) → Vulcan Construction Materials, LLC (L16168) → Puddledock Sand & Gravel (4402424)**

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

## Controller and operator valid-time history

- **Lone Star Industries Inc → Lone Star Cement Inc:** 1978-03-09 through 1986-12-31; derived from co-tenure at mine 4402424; source `msha-controller-operator-history`.
- **Lone Star Industries Inc & Tarmac Plc → Tarmac-Lonestar Inc:** 1987-01-01 through 1988-12-18; derived from co-tenure at mine 4402424; source `msha-controller-operator-history`.
- **Tarmac Plc → Tarmac Mid-Atlantic Inc:** 1988-12-19 through 2000-10-23; derived from co-tenure at mine 4402424; source `msha-controller-operator-history`.
- **Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC:** 2000-10-24 through 2007-11-15; derived from co-tenure at mine 4402424; source `msha-controller-operator-history`.
- **Vulcan Materials Company → Vulcan Construction Materials, LLC:** 2007-11-16 through current/open; derived from co-tenure at mine 4402424; 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 4 since 2021:** Accidents and injuries 17 historical accident/injury rows; 0 coded fatalities and 278 lost days across the published record.
2. **COMPLIANCE — 7 since 2021:** Violations and penalties 108 violation rows across the full record; 23 carry an S&S flag and $22,421 appears in current assessed amounts.
3. **HEALTH — 60 samples:** Occupational health samples 60 personal. 1 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 11K employee hours and 27 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 17 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 6 civil-penalty docket/decision rows, and 5 conference records linked by issuance number.
6. **CONTRACTORS — 16 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 — 12 since 2021:** Inspections 68 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 56.14132 — Horns and backup alarms.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.4201 — Inspection.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **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 56.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300

## Source coverage

- **Accident, Injuries, and Illnesses:** 17 rows; 2004-08-17 through 2025-07-14; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1979-05-25 through 1979-05-25; source ID `msha-addresses`
- **Assessed Violations:** 105 rows; 2000-05-02 through 2024-08-21; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 6 rows; 2011-08-09 through 2024-11-22; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 5 rows; 2003-07-15 through 2024-04-29; source ID `msha-conferences`
- **Contested Violations:** 6 rows; 2010-01-07 through 2024-03-20; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,199 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 243 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1978-03-09 through 2000-10-24; source ID `msha-controller-operator-history`
- **Inspections:** 68 rows; 2000-05-01 through 2026-09-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 60 rows; 2001-05-24 through 2026-09-15; source ID `msha-personal-health-samples`
- **Violations:** 108 rows; 2000-05-02 through 2024-08-21; 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/puddledock-sand-gravel-4402424`
- JSON: `/api/v1/mines/puddledock-sand-gravel-4402424`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4402424/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4402424/relationships`
- MCP resource: `mine://4402424/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`