# Callisto Mine

- **MSHA mine ID:** 4608818
- **Status:** Abandoned
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Boone, WV
- **Operator:** Coal-Mac LLC
- **Controller:** John Mitch Potter
- **Public source rows linked:** 3,373
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**John Mitch Potter (0144441) → Coal-Mac LLC (P20596) → Callisto Mine (4608818)**

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

## Controller and operator valid-time history

- **Chris  Cline → Thunderhill Coal, LLC:** 2000-01-01 through 2006-03-17; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Magnum Coal Company → Thunderhill Coal, LLC:** 2006-03-18 through 2008-07-22; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Patriot Coal Corporation → Thunderhill Coal, LLC:** 2008-07-23 through 2015-10-27; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund Inc.:** 2015-10-28 through 2017-01-25; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Kissito Healthcare Inc → ERP Environmental Fund Inc.:** 2017-01-26 through 2018-12-31; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Virginia Conservation Legacy Fund (VCLF) → ERP Environmental Fund Inc.:** 2019-01-01 through 2020-12-02; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **John Mitch Potter → Coal-Mac LLC:** 2020-12-03 through current/open; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Ashland Inc et al → Coal-Mac LLC:** 2020-12-03 through 1997-06-30; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.
- **Arch Resources Inc → Coal-Mac LLC:** 2020-12-03 through 2019-10-22; derived from co-tenure at mine 4608818; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 21
- 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 — 0 since 2021:** Accidents and injuries 19 historical accident/injury rows; 0 coded fatalities and 531 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 152 violation rows across the full record; 95 carry an S&S flag and $22,191 appears in current assessed amounts.
3. **HEALTH — 276 samples:** Occupational health samples 205 coal dust; 13 coal quartz; 58 noise. 0 personal-sample rows have a published C/E ratio above 1; 3 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 — 22 linked rows:** Contests, conferences and decisions 8 contested-violation rows, 8 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
6. **CONTRACTORS — 14 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 — 15 since 2021:** Inspections 90 inspection events and 3K 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 77.404 — Machinery and equipment; operation and maintenance.** (5 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.410 — Mobile equipment; automatic warning devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.410
- **30 CFR 77.1110 — Examination and maintenance of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110
- **30 CFR 71.501 — Sanitary toilet facilities; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-F/section-71.501
- **30 CFR 71.400 — Bathing facilities; change rooms; sanitary flush toilet facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-E/section-71.400
- **30 CFR 77.1104 — Accumulations of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104
- **30 CFR 77.1600 — Loading and haulage; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1600
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606

## Source coverage

- **Accident, Injuries, and Illnesses:** 19 rows; 2001-07-02 through 2007-04-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-07-08 through 2026-07-08; source ID `msha-addresses`
- **Assessed Violations:** 147 rows; 2001-04-02 through 2019-07-31; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 8 rows; 2016-09-22 through 2016-12-05; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 205 rows; 2001-05-30 through 2019-11-13; source ID `msha-coal-dust-samples`
- **Conferences:** 6 rows; 2001-05-07 through 2001-12-28; source ID `msha-conferences`
- **Contested Violations:** 8 rows; 2015-08-17 through 2015-08-19; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,019 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 419 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 2000-01-01 through 2020-12-03; source ID `msha-controller-operator-history`
- **Inspections:** 90 rows; 2001-03-30 through 2026-04-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 187 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 31 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 58 rows; 2003-06-03 through 2019-01-08; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 13 rows; 2001-11-26 through 2019-08-12; source ID `msha-quartz-samples`
- **Violations:** 152 rows; 2001-04-02 through 2019-07-31; 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/callisto-mine-4608818`
- JSON: `/api/v1/mines/callisto-mine-4608818`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4608818/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4608818/relationships`
- MCP resource: `mine://4608818/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`