# Middle Splint

- **MSHA mine ID:** 4407207
- **Status:** Temporarily Idled
- **Type / commodity:** Underground / Coal (Bituminous)
- **Location:** Lee, VA
- **Operator:** Inmet Mining, LLC
- **Controller:** Industrial Minerals Group LLC
- **Public source rows linked:** 218
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Industrial Minerals Group LLC (0145041) → Inmet Mining, LLC (0166593) → Middle Splint (4407207)**

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

## Controller and operator valid-time history

- **Progress Energy Inc → Powell Mountain Coal Co Inc:** 2007-08-28 through 2008-03-06; derived from co-tenure at mine 4407207; source `msha-controller-operator-history`.
- **Karat Acquisition LLC → Powell Mountain Energy, LLC:** 2008-03-07 through 2008-05-26; derived from co-tenure at mine 4407207; source `msha-controller-operator-history`.
- **International Coal Group Inc (ICG) → Powell Mountain Energy, LLC:** 2008-05-27 through 2011-06-14; derived from co-tenure at mine 4407207; source `msha-controller-operator-history`.
- **Arch Resources Inc → Powell Mountain Energy, LLC:** 2011-06-15 through 2017-09-13; derived from co-tenure at mine 4407207; source `msha-controller-operator-history`.
- **Jeffery A  Hoops → Powell Mountain Energy, LLC:** 2017-09-14 through 2022-07-18; derived from co-tenure at mine 4407207; source `msha-controller-operator-history`.
- **Industrial Minerals Group LLC → Inmet Mining, LLC:** 2022-07-19 through current/open; derived from co-tenure at mine 4407207; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 15
- 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 — 1 since 2021:** Violations and penalties 26 violation rows across the full record; 6 carry an S&S flag and $4,926 appears in current assessed amounts.
3. **HEALTH — 37 samples:** Occupational health samples 29 coal dust; 2 coal quartz; 6 noise. 0 personal-sample rows have a published C/E ratio above 1; 1 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 — 10 linked rows:** Contests, conferences and decisions 5 contested-violation rows, 5 civil-penalty docket/decision rows, and 0 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 — 8 since 2021:** Inspections 65 inspection events and 543 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 75.1711 — Sealing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1711
- **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 77.1110 — 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 48.31 — Hazard training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.31
- **30 CFR 72.520 — Diesel equipment inventory.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-D/section-72.520
- **30 CFR 75.517 — Power wires and cables; insulation and protection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.517
- **30 CFR 75.1107-9 — Dry chemical devices; capacity; minimum requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-L/section-75.1107-9
- **30 CFR 75.503 — Permissible electric face equipment; maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.503
- **30 CFR 75.400 — Accumulation of combustible materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-E/section-75.400
- **30 CFR 75.333 — Ventilation controls.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.333
- **30 CFR 75.380 — Escapeways; bituminous and lignite mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.380

## Source coverage

- **Addresses of Record:** 1 rows; 2011-12-19 through 2011-12-19; source ID `msha-addresses`
- **Assessed Violations:** 26 rows; 2008-12-03 through 2025-11-26; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 5 rows; 2013-06-13 through 2013-06-13; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 29 rows; 2011-05-25 through 2011-10-13; source ID `msha-coal-dust-samples`
- **Contested Violations:** 5 rows; 2011-03-24 through 2011-03-24; source ID `msha-contested-violations`
- **Controller and Operator History:** 6 rows; 2007-08-28 through 2022-07-19; source ID `msha-controller-operator-history`
- **Inspections:** 65 rows; 2007-12-13 through 2026-09-18; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 44 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 2 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 6 rows; 2011-09-14 through 2011-09-14; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 2 rows; 2011-05-25 through 2011-09-06; source ID `msha-quartz-samples`
- **Violations:** 26 rows; 2008-12-03 through 2025-11-26; 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/middle-splint-4407207`
- JSON: `/api/v1/mines/middle-splint-4407207`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4407207/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4407207/relationships`
- MCP resource: `mine://4407207/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`