# Day Branch

- **MSHA mine ID:** 1519757
- **Status:** Abandoned
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Harlan, KY
- **Operator:** Nally & Hamilton Enterprises Inc.
- **Controller:** Thomas R  Hamilton
- **Public source rows linked:** 704
- **Source coverage:** 17 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Thomas R  Hamilton (C03974) → Nally & Hamilton Enterprises Inc. (P01158) → Day Branch (1519757)**

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

## Controller and operator valid-time history

- **Thomas R  Hamilton et al → Nally & Hamilton Enterprises Inc.:** 2014-08-01 through current/open; derived from co-tenure at mine 1519757; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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 4 historical accident/injury rows; 0 coded fatalities and 33 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 62 violation rows across the full record; 4 carry an S&S flag and $7,719 appears in current assessed amounts.
3. **HEALTH — 222 samples:** Occupational health samples 152 coal dust; 15 coal quartz; 55 noise. 0 personal-sample rows have a published C/E ratio above 1; 0 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 5K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 23 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 11 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 22 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 71.403 — Waiver of surface facilities requirements; posting of waiver.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-71/subpart-E/section-71.403
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **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 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 77.1110 — Examination and maintenance of firefighting equipment.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2018-12-17 through 2019-09-30; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-06-24 through 2020-06-24; source ID `msha-addresses`
- **Assessed Violations:** 62 rows; 2015-08-17 through 2019-11-13; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 11 rows; 2017-06-05 through 2019-04-15; source ID `msha-civil-penalty-dockets-decisions`
- **Coal Dust Samples:** 152 rows; 2015-08-17 through 2020-04-27; source ID `msha-coal-dust-samples`
- **Conferences:** 1 rows; 2016-06-28 through 2016-06-28; source ID `msha-conferences`
- **Contested Violations:** 11 rows; 2015-12-16 through 2018-08-31; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 215 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 64 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 2014-08-01 through 2014-08-01; source ID `msha-controller-operator-history`
- **Inspections:** 22 rows; 2014-08-05 through 2020-03-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 21 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 55 rows; 2015-08-17 through 2019-07-10; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 15 rows; 2016-01-27 through 2019-09-05; source ID `msha-quartz-samples`
- **Violations:** 62 rows; 2015-08-17 through 2019-11-13; 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/day-branch-1519757`
- JSON: `/api/v1/mines/day-branch-1519757`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1519757/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1519757/relationships`
- MCP resource: `mine://1519757/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`