# Upper Sandusky Plant

- **MSHA mine ID:** 3300108
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Wyandot, OH
- **Operator:** The Olen Corporation
- **Controller:** Olen Corporation
- **Public source rows linked:** 1,899
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Olen Corporation (M04952) → The Olen Corporation (L06208) → Upper Sandusky Plant (3300108)**

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

## Controller and operator valid-time history

- **Charles H  McCarthy → Mc Carthy Corp:** 1950-01-01 through 2000-03-31; derived from co-tenure at mine 3300108; source `msha-controller-operator-history`.
- **Olen Corporation → The Olen Corporation:** 2000-04-01 through current/open; derived from co-tenure at mine 3300108; 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 — 2 since 2021:** Accidents and injuries 5 historical accident/injury rows; 0 coded fatalities and 50 lost days across the published record.
2. **COMPLIANCE — 21 since 2021:** Violations and penalties 94 violation rows across the full record; 18 carry an S&S flag and $16,162 appears in current assessed amounts.
3. **HEALTH — 182 samples:** Occupational health samples 182 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 12 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 11 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 8 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 — 23 since 2021:** Inspections 72 inspection events and 1K 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 56.14112 — 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 56.3401 — Examination of ground conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3401
- **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
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.14107 — 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 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **30 CFR 56.12016 — Work on electrically-powered equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12016

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2001-03-02 through 2025-10-21; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-05-07 through 2025-05-07; source ID `msha-addresses`
- **Assessed Violations:** 92 rows; 2000-12-12 through 2026-08-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2011-08-18 through 2026-02-17; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 3 rows; 2006-09-01 through 2023-04-26; source ID `msha-conferences`
- **Contested Violations:** 4 rows; 2011-01-18 through 2025-03-10; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 870 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 195 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 2000-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 72 rows; 2000-02-25 through 2026-09-21; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 305 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 69 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:** 182 rows; 2000-12-13 through 2026-09-22; source ID `msha-personal-health-samples`
- **Violations:** 94 rows; 2000-12-12 through 2026-08-25; 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/upper-sandusky-plant-3300108`
- JSON: `/api/v1/mines/upper-sandusky-plant-3300108`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3300108/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3300108/relationships`
- MCP resource: `mine://3300108/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`