# Delphia Mine

- **MSHA mine ID:** 1516478
- **Status:** Abandoned and Sealed
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Perry, KY
- **Operator:** Simpson Mining Co., Inc.
- **Controller:** Harold K  Simpson
- **Public source rows linked:** 155
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Harold K  Simpson (C09689) → Simpson Mining Co., Inc. (P19140) → Delphia Mine (1516478)**

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

## Controller and operator valid-time history

- **Blue Diamond Coal Company → Blue Diamond Coal Company:** 1988-09-01 through 1991-08-18; derived from co-tenure at mine 1516478; source `msha-controller-operator-history`.
- **Richard B  Combs et al → Leatherwood Energy Corp Inc:** 1991-08-19 through 1995-04-03; derived from co-tenure at mine 1516478; source `msha-controller-operator-history`.
- **James A  Hubbard → Hubb Corp:** 1995-04-04 through 2001-08-10; derived from co-tenure at mine 1516478; source `msha-controller-operator-history`.
- **Harold K  Simpson → Simpson Mining Co., Inc.:** 2001-08-11 through current/open; derived from co-tenure at mine 1516478; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 12
- 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 4 historical accident/injury rows; 0 coded fatalities and 92 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 40 violation rows across the full record; 11 carry an S&S flag and $5,142 appears in current assessed amounts.
3. **HEALTH — 29 samples:** Occupational health samples 29 coal dust. 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 9 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 — 0 since 2021:** Inspections 17 inspection events and 330 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 75.335 — Seal strengths, design applications, and installation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.335
- **30 CFR 75.1106-3 — Storage of liquefied and nonliquefied compressed gas cylinders; requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1106-3
- **30 CFR 75.1910 — Nonpermissible diesel-powered equipment; electrical system design and performance requirements.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1910
- **30 CFR 75.1909 — Nonpermissible diesel-powered equipment; design and performance requirements.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1909
- **30 CFR 75.1907 — Diesel-powered equipment intended for use in underground coal mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-T/section-75.1907
- **30 CFR 75.606 — Protection of trailing cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-G/section-75.606

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2000-03-09 through 2000-05-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-06-24 through 2013-06-24; source ID `msha-addresses`
- **Assessed Violations:** 37 rows; 2000-01-04 through 2000-04-24; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 29 rows; 2000-01-17 through 2000-05-11; source ID `msha-coal-dust-samples`
- **Conferences:** 9 rows; 2000-04-11 through 2000-08-16; source ID `msha-conferences`
- **Controller and Operator History:** 4 rows; 1988-09-01 through 2001-08-11; source ID `msha-controller-operator-history`
- **Inspections:** 17 rows; 2000-01-04 through 2002-03-25; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 10 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 3 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 40 rows; 2000-01-04 through 2000-06-07; 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/delphia-mine-1516478`
- JSON: `/api/v1/mines/delphia-mine-1516478`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1516478/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1516478/relationships`
- MCP resource: `mine://1516478/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`