# Area #2

- **MSHA mine ID:** 4003318
- **Status:** Abandoned
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Campbell, TN
- **Operator:** JEF TN, LLC
- **Controller:** Joonbug Exploration Fund, LLC
- **Public source rows linked:** 627
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Joonbug Exploration Fund, LLC (0130741) → JEF TN, LLC (0148933) → Area #2 (4003318)**

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

## Controller and operator valid-time history

- **Bert D  Hatmaker → Triple H Coal, LLC:** 2008-04-01 through 2013-03-24; derived from co-tenure at mine 4003318; source `msha-controller-operator-history`.
- **William  Yeh → Triple H Coal, LLC:** 2013-03-25 through 2015-03-11; derived from co-tenure at mine 4003318; source `msha-controller-operator-history`.
- **Bert D  Hatmaker → Triple H Coal, LLC:** 2015-03-12 through 2016-01-10; derived from co-tenure at mine 4003318; source `msha-controller-operator-history`.
- **Robert C  Gregory Jr → Dixie Carbon, Inc.:** 2016-01-11 through 2017-01-04; derived from co-tenure at mine 4003318; source `msha-controller-operator-history`.
- **Joonbug Exploration Fund, LLC → JEF TN, LLC:** 2017-01-05 through current/open; derived from co-tenure at mine 4003318; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 84 violation rows across the full record; 45 carry an S&S flag and $11,259 appears in current assessed amounts.
3. **HEALTH — 144 samples:** Occupational health samples 82 coal dust; 6 coal quartz; 56 noise. 0 personal-sample rows have a published C/E ratio above 1; 4 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 — 190 tons:** Quarterly production and employment 900 employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 152 linked rows:** Contests, conferences and decisions 75 contested-violation rows, 75 civil-penalty docket/decision rows, and 2 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 — 1 since 2021:** Inspections 46 inspection events and 1K 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 77.1605 — Loading and haulage equipment; installations.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **30 CFR 77.1000 — Highwalls, pits and spoil banks; plans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1000
- **30 CFR 71.500 — Sanitary toilet facilities at surface work sites; installation requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-F/section-71.500
- **30 CFR 77.1110 — Examination and maintenance of firefighting equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110
- **30 CFR 71.209 — Status change reports.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-C/section-71.209
- **30 CFR 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130
- **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
- **30 CFR 72.620 — Drill dust control at surface mines and surface areas of underground mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-E/section-72.620
- **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 62.190 — Records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.190

## Source coverage

- **Addresses of Record:** 1 rows; 2021-04-02 through 2021-04-02; source ID `msha-addresses`
- **Assessed Violations:** 81 rows; 2008-06-19 through 2019-06-19; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 75 rows; 2010-10-20 through 2013-05-31; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 82 rows; 2008-04-21 through 2018-03-30; source ID `msha-coal-dust-samples`
- **Conferences:** 2 rows; 2016-04-23 through 2016-04-23; source ID `msha-conferences`
- **Contested Violations:** 75 rows; 2008-04-15 through 2012-03-09; source ID `msha-contested-violations`
- **Controller and Operator History:** 5 rows; 2008-04-01 through 2017-01-05; source ID `msha-controller-operator-history`
- **Inspections:** 46 rows; 2008-04-15 through 2021-04-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 99 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 14 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 56 rows; 2008-04-21 through 2018-01-18; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 6 rows; 2016-03-23 through 2018-01-18; source ID `msha-quartz-samples`
- **Violations:** 84 rows; 2008-06-19 through 2019-06-19; 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/area-2-4003318`
- JSON: `/api/v1/mines/area-2-4003318`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4003318/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4003318/relationships`
- MCP resource: `mine://4003318/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`