# TDK Strip

- **MSHA mine ID:** 3607707
- **Status:** Abandoned
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Clarion, PA
- **Operator:** TDK Coal Sales Inc
- **Controller:** Robert E  Murray
- **Public source rows linked:** 544
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Robert E  Murray (C13408) → TDK Coal Sales Inc (P24145) → TDK Strip (3607707)**

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

## Controller and operator valid-time history

- **Timothy P  Reddinger → Tdk Coal Sales Inc:** 1985-06-01 through 1999-01-31; derived from co-tenure at mine 3607707; source `msha-controller-operator-history`.
- **Robert E  Murray → TDK Coal Sales Inc:** 1999-02-01 through current/open; derived from co-tenure at mine 3607707; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 5 historical accident/injury rows; 0 coded fatalities and 66 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 20 violation rows across the full record; 5 carry an S&S flag and $1,791 appears in current assessed amounts.
3. **HEALTH — 162 samples:** Occupational health samples 111 coal dust; 15 coal quartz; 36 noise. 0 personal-sample rows have a published C/E ratio above 1; 7 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 — 9 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 9 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 0 since 2021:** Inspections 44 inspection events and 621 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 77.1713 — Daily inspection of surface coal mine; certified person; reports of inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-R/section-77.1713
- **30 CFR 77.403 — Mobile equipment; falling object protective structures (FOPS).** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.403
- **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 77.410 — 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 62.130 — 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 77.1607 — Loading and haulage equipment; operation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1607
- **30 CFR 48.31 — Hazard training.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.31
- **30 CFR 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 77.1109 — Quantity and location of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1109

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2001-01-16 through 2001-11-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2006-05-11 through 2006-05-11; source ID `msha-addresses`
- **Assessed Violations:** 20 rows; 2000-05-22 through 2004-06-15; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 111 rows; 2000-01-03 through 2003-06-11; source ID `msha-coal-dust-samples`
- **Conferences:** 9 rows; 2000-07-03 through 2002-02-07; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 186 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 50 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1985-06-01 through 1999-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 44 rows; 2000-05-22 through 2004-09-29; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 37 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 7 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 36 rows; 2000-05-23 through 2003-01-15; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 15 rows; 2000-05-22 through 2003-06-10; source ID `msha-quartz-samples`
- **Violations:** 20 rows; 2000-05-22 through 2004-06-15; 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/tdk-strip-3607707`
- JSON: `/api/v1/mines/tdk-strip-3607707`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3607707/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3607707/relationships`
- MCP resource: `mine://3607707/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`