# American Sand & Gravel - Plant #4

- **MSHA mine ID:** 3304210
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Stark, OH
- **Operator:** American Sand and Gravel
- **Controller:** Kenmore Construction Company Inc
- **Public source rows linked:** 477
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Kenmore Construction Company Inc (M03718) → American Sand and Gravel (L04612) → American Sand & Gravel - Plant #4 (3304210)**

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

## Controller and operator valid-time history

- **Kenmore Construction Company Inc → American Sand and Gravel:** 1990-07-01 through current/open; derived from co-tenure at mine 3304210; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 9 historical accident/injury rows; 0 coded fatalities and 458 lost days across the published record.
2. **COMPLIANCE — 19 since 2021:** Violations and penalties 53 violation rows across the full record; 5 carry an S&S flag and $6,349 appears in current assessed amounts.
3. **HEALTH — 19 samples:** Occupational health samples 19 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 9K employee hours and 15 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 21 linked rows:** Contests, conferences and decisions 10 contested-violation rows, 10 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 — 13 since 2021:** Inspections 53 inspection events and 904 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 50.20-1 — General instructions for completing MSHA Form 7000-1.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20-1
- **30 CFR 47.41 — Requirement for container labels.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **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 56.14101 — 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 56.12004 — 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 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 56.9100 — Traffic control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9100

## Source coverage

- **Accident, Injuries, and Illnesses:** 9 rows; 2001-05-29 through 2025-08-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-10-21 through 2011-10-21; source ID `msha-addresses`
- **Assessed Violations:** 52 rows; 2000-05-17 through 2026-07-27; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 10 rows; 2011-08-09 through 2012-03-15; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2021-01-22 through 2021-01-22; source ID `msha-conferences`
- **Contested Violations:** 10 rows; 2010-06-29 through 2010-11-04; source ID `msha-contested-violations`
- **Controller and Operator History:** 1 rows; 1990-07-01 through 1990-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 53 rows; 2000-05-17 through 2026-07-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 212 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 55 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:** 19 rows; 2002-05-09 through 2025-04-02; source ID `msha-personal-health-samples`
- **Violations:** 53 rows; 2000-05-17 through 2026-07-27; 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/american-sand-gravel-plant-4-3304210`
- JSON: `/api/v1/mines/american-sand-gravel-plant-4-3304210`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304210/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304210/relationships`
- MCP resource: `mine://3304210/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`