# Trevorton Strip

- **MSHA mine ID:** 3609548
- **Status:** Active
- **Type / commodity:** Surface / Coal (Anthracite)
- **Location:** Northumberland, PA
- **Operator:** Keystone Anthracite Company Incorporated
- **Controller:** Robert  Burns
- **Public source rows linked:** 675
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Robert  Burns (0099435) → Keystone Anthracite Company Incorporated (P23026) → Trevorton Strip (3609548)**

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

## Controller and operator valid-time history

- **Michael R  Burns → Keystone Anthracite Company Incorporated:** 2007-08-09 through 2011-02-28; derived from co-tenure at mine 3609548; source `msha-controller-operator-history`.
- **Robert  Burns → Keystone Anthracite Company Incorporated:** 2011-03-01 through current/open; derived from co-tenure at mine 3609548; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 — 2 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 38 since 2021:** Violations and penalties 56 violation rows across the full record; 2 carry an S&S flag and $7,280 appears in current assessed amounts.
3. **HEALTH — 369 samples:** Occupational health samples 240 coal dust; 10 coal quartz; 119 noise. 0 personal-sample rows have a published C/E ratio above 1; 2 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 — 48K tons:** Quarterly production and employment 16K employee hours and 25 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 18 since 2021:** Inspections 56 inspection events and 2K published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 49,384 short tons
- **Labor hours:** 51,538
- **Average employees:** 21
- **Coal supply region:** Appalachia Northern
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.400 — Mechanical equipment guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.400
- **30 CFR 77.205 — Travelways at surface installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-C/section-77.205
- **30 CFR 77.701-1 — Approved methods of grounding of equipment receiving power from ungrounded alternating current power systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-H/section-77.701-1
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **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 77.512 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.512
- **30 CFR 77.502 — Electric equipment; examination, testing, and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502
- **30 CFR 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 77.502-2 — Electric equipment; frequency of examination and testing.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.502-2

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2020-12-07 through 2023-03-15; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2010-06-03 through 2010-06-03; source ID `msha-addresses`
- **Assessed Violations:** 54 rows; 2010-07-01 through 2026-08-20; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 240 rows; 2010-07-01 through 2026-09-17; source ID `msha-coal-dust-samples`
- **Contractor Employment and Production — Quarterly:** 31 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 9 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2007-08-09 through 2007-08-09; source ID `msha-controller-operator-history`
- **Inspections:** 56 rows; 2008-03-21 through 2026-08-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 76 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 17 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 119 rows; 2010-07-01 through 2026-08-25; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 10 rows; 2015-10-05 through 2025-04-22; source ID `msha-quartz-samples`
- **Violations:** 56 rows; 2010-07-01 through 2026-08-20; 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/trevorton-strip-3609548`
- JSON: `/api/v1/mines/trevorton-strip-3609548`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3609548/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3609548/relationships`
- MCP resource: `mine://3609548/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`