# Saturn Surface Mine

- **MSHA mine ID:** 4609568
- **Status:** NonProducing
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Mercer, WV
- **Operator:** Onyx Energy, LLC
- **Controller:** Mohegan Energy Trustees LLC
- **Public source rows linked:** 717
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Mohegan Energy Trustees LLC (0141301) → Onyx Energy, LLC (0098205) → Saturn Surface Mine (4609568)**

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

## Controller and operator valid-time history

- **Mohegan Energy Trustees LLC → Onyx Energy, LLC:** 2019-05-02 through 2025-07-26; derived from co-tenure at mine 4609568; source `msha-controller-operator-history`.
- **Richard G  Preservati II → Onyx Energy, LLC:** 2019-05-02 through 2018-05-15; derived from co-tenure at mine 4609568; source `msha-controller-operator-history`.
- **John  Stone → Stacy Equipment and Repairs, Incorporated:** 2025-07-27 through 2026-04-01; derived from co-tenure at mine 4609568; source `msha-controller-operator-history`.
- **Mohegan Energy Trustees LLC → Onyx Energy, LLC:** 2026-04-02 through current/open; derived from co-tenure at mine 4609568; source `msha-controller-operator-history`.
- **Richard G  Preservati II → Onyx Energy, LLC:** 2026-04-02 through 2018-05-15; derived from co-tenure at mine 4609568; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- Interval anomalies: 2
- 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 — 1 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 66 lost days across the published record.
2. **COMPLIANCE — 69 since 2021:** Violations and penalties 69 violation rows across the full record; 18 carry an S&S flag and $25,984 appears in current assessed amounts.
3. **HEALTH — 162 samples:** Occupational health samples 116 coal dust; 20 coal quartz; 26 noise. 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 — 14K tons:** Quarterly production and employment 8K employee hours and 11 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 27 linked rows:** Contests, conferences and decisions 13 contested-violation rows, 14 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 22 since 2021:** Inspections 22 inspection events and 815 published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 148,024 short tons
- **Labor hours:** 120,280
- **Average employees:** 42
- **Coal supply region:** Appalachia Central
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (8 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **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 77.404 — Machinery and equipment; operation and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 48.26 — Experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.26
- **30 CFR 77.1001 — Stripping; loose material.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1001

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2025-12-30 through 2025-12-30; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-06-16 through 2026-06-16; source ID `msha-addresses`
- **Assessed Violations:** 68 rows; 2021-09-07 through 2026-02-09; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 14 rows; 2024-03-29 through 2026-02-23; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 116 rows; 2021-09-07 through 2026-03-09; source ID `msha-coal-dust-samples`
- **Contested Violations:** 13 rows; 2023-08-21 through 2025-08-18; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 266 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 70 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2019-05-02 through 2026-04-02; source ID `msha-controller-operator-history`
- **Inspections:** 22 rows; 2021-08-30 through 2026-06-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 19 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 26 rows; 2021-09-07 through 2026-02-09; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 20 rows; 2021-09-07 through 2026-02-03; source ID `msha-quartz-samples`
- **Violations:** 69 rows; 2021-09-07 through 2026-02-09; 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/saturn-surface-mine-4609568`
- JSON: `/api/v1/mines/saturn-surface-mine-4609568`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4609568/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4609568/relationships`
- MCP resource: `mine://4609568/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`