# EUREKA PORTABLE SCREENING PLANT

- **MSHA mine ID:** 0202683
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Coconino, AZ
- **Operator:** Eureka Rock Llc
- **Controller:** Thomas  Mattics
- **Public source rows linked:** 120
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Thomas  Mattics (M11553) → Eureka Rock Llc (L15159) → EUREKA PORTABLE SCREENING PLANT (0202683)**

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

## Controller and operator valid-time history

- **Thomas  Mattics → Eureka Rock Llc:** 1997-04-01 through current/open; derived from co-tenure at mine 0202683; 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: 2026-10-17T05:35:58.500035+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 — 0 since 2021:** Violations and penalties 34 violation rows across the full record; 2 carry an S&S flag and $2,058 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 150 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 27 linked rows:** Contests, conferences and decisions 10 contested-violation rows, 10 civil-penalty docket/decision rows, and 7 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 21 inspection events and 165 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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (12 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30

## Source coverage

- **Addresses of Record:** 1 rows; 2013-02-12 through 2013-02-12; source ID `msha-addresses`
- **Assessed Violations:** 20 rows; 2000-04-04 through 2011-09-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 10 rows; 2010-07-21 through 2012-02-21; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2007-07-26 through 2008-09-03; source ID `msha-conferences`
- **Contested Violations:** 10 rows; 2008-06-16 through 2010-07-01; source ID `msha-contested-violations`
- **Controller and Operator History:** 1 rows; 1997-04-01 through 1997-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 21 rows; 2000-03-29 through 2011-09-26; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 11 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 4 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 34 rows; 2000-04-04 through 2011-09-26; 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/eureka-portable-screening-plant-0202683`
- JSON: `/api/v1/mines/eureka-portable-screening-plant-0202683`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0202683/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0202683/relationships`
- MCP resource: `mine://0202683/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`