# TWIN BRANCH NO 1 SURFACE

- **MSHA mine ID:** 4609075
- **Status:** Active
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Mingo, WV
- **Operator:** COAL-MAC LLC.
- **Controller:** John Mitch Potter
- **Public source rows linked:** 9,670
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**John Mitch Potter (0144441) → COAL-MAC LLC. (P20596) → TWIN BRANCH NO 1 SURFACE (4609075)**

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

## Controller and operator valid-time history

- **CONSOL Energy Inc → CONSOL of Kentucky Inc.:** 2004-12-07 through 2016-08-01; derived from co-tenure at mine 4609075; source `msha-controller-operator-history`.
- **James H  Booth et al → Southeastern Land, LLC.:** 2016-08-02 through 2020-06-29; derived from co-tenure at mine 4609075; source `msha-controller-operator-history`.
- **John Mitch Potter → Coal-Mac LLC.:** 2020-06-30 through current/open; derived from co-tenure at mine 4609075; source `msha-controller-operator-history`.
- **Ashland Inc et al → Coal-Mac LLC.:** 2020-06-30 through 1997-06-30; derived from co-tenure at mine 4609075; source `msha-controller-operator-history`.
- **Arch Resources Inc → Coal-Mac LLC.:** 2020-06-30 through 2019-10-22; derived from co-tenure at mine 4609075; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 — 33 since 2021:** Accidents and injuries 55 historical accident/injury rows; 0 coded fatalities and 3,740 lost days across the published record.
2. **COMPLIANCE — 690 since 2021:** Violations and penalties 1,258 violation rows across the full record; 277 carry an S&S flag and $884,832 appears in current assessed amounts.
3. **HEALTH — 823 samples:** Occupational health samples 689 coal dust; 46 coal quartz; 88 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 — 344K tons:** Quarterly production and employment 94K employee hours and 146 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 837 linked rows:** Contests, conferences and decisions 406 contested-violation rows, 406 civil-penalty docket/decision rows, and 25 conference records linked by issuance number.
6. **CONTRACTORS — 32 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 — 41 since 2021:** Inspections 72 inspection events and 8K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 1,309,132 short tons
- **Labor hours:** 412,892
- **Average employees:** 148
- **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 77.1007 — Drilling; general.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1007
- **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 77.1606 — Loading and haulage equipment; inspection and maintenance.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **30 CFR 77.402 — Hand-held power tools; safety devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.402
- **30 CFR 77.1605 — Loading and haulage equipment; installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **30 CFR 77.400 — Mechanical equipment guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400
- **30 CFR 77.1104 — Accumulations of combustible materials.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1104

## Source coverage

- **Accident, Injuries, and Illnesses:** 55 rows; 2013-09-15 through 2026-08-25; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-07-20 through 2020-07-20; source ID `msha-addresses`
- **Assessed Violations:** 1,181 rows; 2012-11-28 through 2026-08-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 406 rows; 2014-10-31 through 2026-10-05; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 689 rows; 2012-12-01 through 2026-09-24; source ID `msha-coal-dust-samples`
- **Conferences:** 25 rows; 2014-01-09 through 2023-07-31; source ID `msha-conferences`
- **Contested Violations:** 406 rows; 2014-01-02 through 2026-05-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 4,323 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 944 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2004-12-07 through 2020-06-30; source ID `msha-controller-operator-history`
- **Inspections:** 72 rows; 2006-03-01 through 2026-10-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 147 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 23 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 88 rows; 2013-06-20 through 2026-01-08; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 46 rows; 2015-03-03 through 2026-09-23; source ID `msha-quartz-samples`
- **Violations:** 1,258 rows; 2012-11-28 through 2026-09-29; 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/twin-branch-no-1-surface-4609075`
- JSON: `/api/v1/mines/twin-branch-no-1-surface-4609075`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4609075/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4609075/relationships`
- MCP resource: `mine://4609075/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`