# Dickerson P3

- **MSHA mine ID:** 3304507
- **Status:** NonProducing
- **Type / commodity:** Facility / Coal (Bituminous)
- **Location:** Harrison, OH
- **Operator:** Empire Minerals of Ohio, Inc.
- **Controller:** Empire Diversified Energy, Inc.
- **Public source rows linked:** 1,846
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Empire Diversified Energy, Inc. (0190560) → Empire Minerals of Ohio, Inc. (0200833) → Dickerson P3 (3304507)**

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

## Controller and operator valid-time history

- **DTE Energy Company → DTE Dickerson LLC:** 2002-07-16 through 2011-07-28; derived from co-tenure at mine 3304507; source `msha-controller-operator-history`.
- **Eco Delicate Process Systems LLC → DTE Dickerson LLC:** 2011-07-29 through 2011-10-30; derived from co-tenure at mine 3304507; source `msha-controller-operator-history`.
- **Eco Delicate Process Systems LLC → Dickerson LLC:** 2011-10-31 through 2017-04-20; derived from co-tenure at mine 3304507; source `msha-controller-operator-history`.
- **Richard  Tuorto → Dickerson LLC:** 2017-04-21 through 2019-04-06; derived from co-tenure at mine 3304507; source `msha-controller-operator-history`.
- **Empire Minerals of Ohio Inc → Dickerson LLC:** 2019-04-07 through 2024-12-05; derived from co-tenure at mine 3304507; source `msha-controller-operator-history`.
- **Empire Diversified Energy, Inc. → Empire Minerals of Ohio, Inc.:** 2024-12-06 through current/open; derived from co-tenure at mine 3304507; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 15
- 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 12 historical accident/injury rows; 0 coded fatalities and 104 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 83 violation rows across the full record; 25 carry an S&S flag and $20,344 appears in current assessed amounts.
3. **HEALTH — 12 samples:** Occupational health samples 7 coal dust; 5 noise. 0 personal-sample rows have a published C/E ratio above 1; 1 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 94 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 3 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 7 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 — 24 since 2021:** Inspections 120 inspection events and 2K 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 77.216-3 — Water, sediment, or slurry impoundments and impounding structures; inspection requirements; correction of hazards; program requirements.** (6 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216-3
- **30 CFR 77.216-4 — Water, sediment or slurry impoundments and impounding structures; reporting requirements; certification.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.216-4
- **30 CFR 77.200 — Surface installations; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.200

## Source coverage

- **Accident, Injuries, and Illnesses:** 12 rows; 2003-10-05 through 2006-03-03; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2019-10-01 through 2019-10-01; source ID `msha-addresses`
- **Assessed Violations:** 80 rows; 2004-02-02 through 2025-07-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2016-11-22 through 2016-11-22; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 7 rows; 2003-07-09 through 2018-09-13; source ID `msha-coal-dust-samples`
- **Conferences:** 1 rows; 2017-06-14 through 2017-06-14; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2016-04-29 through 2016-04-29; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,145 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 238 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 2002-07-16 through 2024-12-06; source ID `msha-controller-operator-history`
- **Inspections:** 120 rows; 2002-09-18 through 2026-09-10; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 129 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 16 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 5 rows; 2004-07-20 through 2018-09-13; source ID `msha-noise-samples`
- **Violations:** 83 rows; 2004-02-02 through 2025-07-16; 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/dickerson-p3-3304507`
- JSON: `/api/v1/mines/dickerson-p3-3304507`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304507/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304507/relationships`
- MCP resource: `mine://3304507/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`