# Batavia Mine

- **MSHA mine ID:** 3304578
- **Status:** Active
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Clermont, OH
- **Operator:** Arch Materials LLC
- **Controller:** Rogers Group Inc
- **Public source rows linked:** 4,876
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Rogers Group Inc (M00452) → Arch Materials LLC (0075864) → Batavia Mine (3304578)**

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

## Controller and operator valid-time history

- **Ben L  Rechter et al → Arch Materials LLC:** 2006-10-16 through 2014-01-30; derived from co-tenure at mine 3304578; source `msha-controller-operator-history`.
- **Rogers Group Inc → Arch Materials LLC:** 2014-01-31 through current/open; derived from co-tenure at mine 3304578; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 — 5 since 2021:** Accidents and injuries 38 historical accident/injury rows; 0 coded fatalities and 1,049 lost days across the published record.
2. **COMPLIANCE — 99 since 2021:** Violations and penalties 361 violation rows across the full record; 71 carry an S&S flag and $64,731 appears in current assessed amounts.
3. **HEALTH — 389 samples:** Occupational health samples 368 personal; 21 area. 22 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
5. **LEGAL — 38 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 11 civil-penalty docket/decision rows, and 16 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 — 39 since 2021:** Inspections 133 inspection events and 6K 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 57.14107 — Moving machine parts.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14107
- **30 CFR 57.15005 — Safety belts and lines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-N/section-57.15005
- **30 CFR 57.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14109
- **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 57.4100 — Smoking and use of open flames.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4100
- **30 CFR 57.11008 — Restricted clearance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11008
- **30 CFR 57.16009 — Suspended loads.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-O/section-57.16009

## Source coverage

- **Accident, Injuries, and Illnesses:** 38 rows; 2007-08-07 through 2026-03-26; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-11-19 through 2009-11-19; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 21 rows; 2010-05-19 through 2026-04-21; source ID `msha-area-samples`
- **Assessed Violations:** 356 rows; 2007-03-13 through 2026-04-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 11 rows; 2011-11-21 through 2025-03-19; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 16 rows; 2013-04-25 through 2026-07-16; source ID `msha-conferences`
- **Contested Violations:** 11 rows; 2010-09-20 through 2024-07-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,862 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 632 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2006-10-16 through 2006-10-16; source ID `msha-controller-operator-history`
- **Inspections:** 133 rows; 2007-03-12 through 2026-10-13; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 63 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:** 368 rows; 2007-09-12 through 2026-04-22; source ID `msha-personal-health-samples`
- **Violations:** 361 rows; 2007-03-13 through 2026-04-07; 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/batavia-mine-3304578`
- JSON: `/api/v1/mines/batavia-mine-3304578`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304578/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304578/relationships`
- MCP resource: `mine://3304578/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`