# Crusher #1

- **MSHA mine ID:** 0203422
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Pinal, AZ
- **Operator:** Rock Pros USA, LLC
- **Controller:** The Shepherd Family Living Trust; The Lin Irrevocable Trust
- **Public source rows linked:** 386
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**The Shepherd Family Living Trust; The Lin Irrevocable Trust (0152201) → Rock Pros USA, LLC (0167653) → Crusher #1 (0203422)**

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

## Controller and operator valid-time history

- **The Lin Irrevocable Trust et al → Rock Pros USA, LLC:** 2019-12-10 through current/open; derived from co-tenure at mine 0203422; source `msha-controller-operator-history`.
- **The Shepherd Family Living Trust et al → Rock Pros USA, LLC:** 2019-12-10 through current/open; derived from co-tenure at mine 0203422; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 4
- 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 — 87 since 2021:** Violations and penalties 93 violation rows across the full record; 41 carry an S&S flag and $101,339 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 personal. 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
5. **LEGAL — 31 linked rows:** Contests, conferences and decisions 13 contested-violation rows, 14 civil-penalty docket/decision rows, and 4 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 — 26 since 2021:** Inspections 30 inspection events and 407 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 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 57.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12008
- **30 CFR 56.14101 — Brakes.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **30 CFR 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **30 CFR 56.23003 — Requirements for written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23003

## Source coverage

- **Addresses of Record:** 1 rows; 2021-04-22 through 2021-04-22; source ID `msha-addresses`
- **Assessed Violations:** 87 rows; 2020-08-06 through 2026-06-03; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 14 rows; 2022-01-12 through 2026-07-15; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2024-12-20 through 2024-12-20; source ID `msha-conferences`
- **Contested Violations:** 13 rows; 2021-08-02 through 2025-05-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 99 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 26 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2019-12-10 through 2019-12-10; source ID `msha-controller-operator-history`
- **Inspections:** 30 rows; 2020-08-06 through 2026-06-03; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 8 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 8 rows; 2023-05-11 through 2025-10-15; source ID `msha-personal-health-samples`
- **Violations:** 93 rows; 2020-08-06 through 2026-06-03; 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/crusher-1-0203422`
- JSON: `/api/v1/mines/crusher-1-0203422`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0203422/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0203422/relationships`
- MCP resource: `mine://0203422/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`