# Harrison

- **MSHA mine ID:** 4202484
- **Status:** Abandoned
- **Type / commodity:** Underground / Gilsonite
- **Location:** Uintah, UT
- **Operator:** Ziegler Chemical & Mineral Corp
- **Controller:** Gordon S  Ziegler Jr
- **Public source rows linked:** 82
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Gordon S  Ziegler Jr (M01010) → Ziegler Chemical & Mineral Corp (L01159) → Harrison (4202484)**

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

## Controller and operator valid-time history

- **Gordon S  Ziegler Jr → Ziegler Chemical & Mineral Corp:** 2007-09-20 through current/open; derived from co-tenure at mine 4202484; 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 6 historical accident/injury rows; 0 coded fatalities and 50 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 19 violation rows across the full record; 7 carry an S&S flag and $3,845 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 1K employee hours and 4 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 — 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 — 0 since 2021:** Inspections 6 inspection events and 111 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 57.8520 — Ventilation plan.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-G/section-57.8520
- **30 CFR 57.11053 — Escape and evacuation plans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11053
- **30 CFR 57.19023 — Examinations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-R/section-57.19023
- **30 CFR 57.11037 — Ladderway openings.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11037
- **30 CFR 57.11006 — Fixed ladder landings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11006
- **30 CFR 57.11051 — Escape routes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11051
- **30 CFR 57.4560 — Mine entrances.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4560
- **30 CFR 57.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12025
- **30 CFR 57.20008 — Toilet facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20008
- **30 CFR 57.13021 — High-pressure hose connections.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-L/section-57.13021

## Source coverage

- **Accident, Injuries, and Illnesses:** 6 rows; 2008-04-14 through 2009-01-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2009-08-31 through 2009-08-31; source ID `msha-addresses`
- **Assessed Violations:** 18 rows; 2008-03-10 through 2009-08-31; source ID `msha-assessed-violations`
- **Controller and Operator History:** 1 rows; 2007-09-20 through 2007-09-20; source ID `msha-controller-operator-history`
- **Inspections:** 6 rows; 2007-12-05 through 2009-08-31; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 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`
- **Violations:** 19 rows; 2008-03-10 through 2009-08-31; 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/harrison-4202484`
- JSON: `/api/v1/mines/harrison-4202484`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4202484/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4202484/relationships`
- MCP resource: `mine://4202484/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`