# PIKETON SAND & GRAVEL

- **MSHA mine ID:** 3302633
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Pike, OH
- **Operator:** Heidelberg Materials Midwest Agg, Inc.
- **Controller:** Heidelberg Materials AG
- **Public source rows linked:** 242
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Heidelberg Materials AG (M00004) → Heidelberg Materials Midwest Agg, Inc. (L16286) → PIKETON SAND & GRAVEL (3302633)**

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

## Controller and operator valid-time history

- **Standard Slag Company → Standard Slag Company:** 1950-01-01 through 1989-09-30; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.
- **Lafarge S A → Standard Lafarge:** 1989-10-01 through 1994-01-02; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.
- **Davon Inc → Piketon Sand & Gravel-Div/Davon Inc:** 1994-01-03 through 2001-03-30; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.
- **Hanson PLC → Hanson Aggregates Davon, LLC:** 2001-03-31 through 2007-08-22; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Hanson Aggregates Davon, LLC:** 2007-08-23 through 2023-03-15; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.
- **Heidelberg Materials AG → Heidelberg Materials Midwest Agg, Inc.:** 2023-03-16 through current/open; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.
- **Hanson PLC → Heidelberg Materials Midwest Agg, Inc.:** 2023-03-16 through 2007-08-22; derived from co-tenure at mine 3302633; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 18
- 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 — 0 since 2021:** Accidents and injuries 5 historical accident/injury rows; 0 coded fatalities and 298 lost days across the published record.
2. **COMPLIANCE — 12 since 2021:** Violations and penalties 38 violation rows across the full record; 2 carry an S&S flag and $4,329 appears in current assessed amounts.
3. **HEALTH — 15 samples:** Occupational health samples 15 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 3K employee hours and 7 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 5 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 55 inspection events and 721 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 46.6 — Newly hired experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.6
- **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 56.14115 — Stationary grinding machines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14115
- **30 CFR 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **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 56.11027 — Scaffolds and working platforms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11027
- **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 56.20003 — 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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14103 — Operators stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103
- **30 CFR 56.14201 — Conveyor start-up warnings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14201

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2000-01-17 through 2013-05-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2023-11-29 through 2023-11-29; source ID `msha-addresses`
- **Assessed Violations:** 38 rows; 2001-03-26 through 2026-08-18; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2010-05-21 through 2011-05-19; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2008-01-04 through 2008-01-04; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2009-07-28 through 2010-10-19; source ID `msha-contested-violations`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2023-03-16; source ID `msha-controller-operator-history`
- **Inspections:** 55 rows; 2000-01-19 through 2026-09-23; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 23 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:** 15 rows; 2003-05-13 through 2026-09-23; source ID `msha-personal-health-samples`
- **Violations:** 38 rows; 2001-03-26 through 2026-08-18; 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/piketon-sand-gravel-3302633`
- JSON: `/api/v1/mines/piketon-sand-gravel-3302633`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3302633/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3302633/relationships`
- MCP resource: `mine://3302633/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`