# Millersville Quarry

- **MSHA mine ID:** 3304511
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Seneca, OH
- **Operator:** MGQ, Inc.
- **Controller:** Tim E Bell
- **Public source rows linked:** 1,004
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Tim E Bell (M11891) → MGQ, Inc. (L15589) → Millersville Quarry (3304511)**

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

## Controller and operator valid-time history

- **Tim E Bell  et al → MGQ Aggregates Incorporated:** 2002-09-26 through 2017-05-01; derived from co-tenure at mine 3304511; source `msha-controller-operator-history`.
- **Tim E Bell  et al → MGQ, Inc.:** 2017-05-02 through current/open; derived from co-tenure at mine 3304511; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 — 0 since 2021:** Accidents and injuries 2 historical accident/injury rows; 1 coded fatalities and 5 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 51 violation rows across the full record; 18 carry an S&S flag and $18,134 appears in current assessed amounts.
3. **HEALTH — 18 samples:** Occupational health samples 18 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 236 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 11 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 5 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 — 0 since 2021:** Inspections 36 inspection events and 774 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 56.15001 — First-aid materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15001
- **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 56.12004 — 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 50.10 — Immediate notification.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-B/section-50.10
- **30 CFR 56.14131 — Seat belts for haulage trucks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14131
- **30 CFR 56.9101 — Operating speeds and control of equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9101
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 56.4601 — Oxygen cylinder storage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4601
- **30 CFR 56.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3200

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2003-04-23 through 2014-12-01; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2017-08-10 through 2017-08-10; source ID `msha-addresses`
- **Assessed Violations:** 50 rows; 2003-01-15 through 2017-05-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2016-01-15 through 2016-01-15; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 5 rows; 2015-01-08 through 2015-04-07; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2015-01-21 through 2015-01-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 540 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 113 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2002-09-26 through 2017-05-02; source ID `msha-controller-operator-history`
- **Inspections:** 36 rows; 2003-01-15 through 2017-05-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 143 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 36 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:** 18 rows; 2003-07-29 through 2017-05-16; source ID `msha-personal-health-samples`
- **Violations:** 51 rows; 2003-01-15 through 2017-05-16; 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/millersville-quarry-3304511`
- JSON: `/api/v1/mines/millersville-quarry-3304511`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304511/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304511/relationships`
- MCP resource: `mine://3304511/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`