# Dry Fork Sand & Gravel

- **MSHA mine ID:** 3304460
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Hamilton, OH
- **Operator:** Heidelberg Materials Midwest Agg, Inc.
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 1,315
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials Midwest Agg, Inc. (L16286) → Dry Fork Sand & Gravel (3304460)**

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

## Controller and operator valid-time history

- **Bunnell James → James Bunnell Inc:** 2000-05-01 through 2003-01-15; derived from co-tenure at mine 3304460; source `msha-controller-operator-history`.
- **Hanson PLC → James Bunnell Inc:** 2003-01-16 through 2007-08-22; derived from co-tenure at mine 3304460; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → James Bunnell Inc:** 2007-08-23 through 2008-08-14; derived from co-tenure at mine 3304460; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials Midwest Agg, Inc.:** 2008-08-15 through current/open; derived from co-tenure at mine 3304460; source `msha-controller-operator-history`.
- **Hanson PLC → Heidelberg Materials Midwest Agg, Inc.:** 2008-08-15 through 2007-08-22; derived from co-tenure at mine 3304460; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- Interval anomalies: 1
- 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 — 1 since 2021:** Accidents and injuries 7 historical accident/injury rows; 1 coded fatalities and 251 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 48 violation rows across the full record; 10 carry an S&S flag and $177,063 appears in current assessed amounts.
3. **HEALTH — 36 samples:** Occupational health samples 36 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 6K employee hours and 11 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 16 linked rows:** Contests, conferences and decisions 5 contested-violation rows, 5 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 56 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 56.12004 — 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 56.4402 — 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 56.14100 — Safety defects; examination, correction and records.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.17001 — Illumination of surface working areas.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-P/section-56.17001
- **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 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **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 56.12008 — Insulation and fittings for power wires and cables.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2004-03-30 through 2021-07-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2023-11-29 through 2023-11-29; source ID `msha-addresses`
- **Assessed Violations:** 47 rows; 2000-07-11 through 2026-04-22; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 5 rows; 2011-03-23 through 2018-03-05; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 6 rows; 2005-10-04 through 2016-01-21; source ID `msha-conferences`
- **Contested Violations:** 5 rows; 2010-01-12 through 2015-10-13; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 814 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 206 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2000-05-01 through 2008-08-15; source ID `msha-controller-operator-history`
- **Inspections:** 56 rows; 2000-07-10 through 2026-09-22; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 21 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 57 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:** 36 rows; 2000-07-11 through 2026-09-23; source ID `msha-personal-health-samples`
- **Violations:** 48 rows; 2000-07-11 through 2026-04-22; 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/dry-fork-sand-gravel-3304460`
- JSON: `/api/v1/mines/dry-fork-sand-gravel-3304460`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304460/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304460/relationships`
- MCP resource: `mine://3304460/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`