# Portable Crusher #2 (45)

- **MSHA mine ID:** 1001905
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Canyon, ID
- **Operator:** River Rock Sand & Gravel, LLC
- **Controller:** Lance S Thueson; Janel  Thueson
- **Public source rows linked:** 408
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Lance S Thueson; Janel  Thueson (0055349) → River Rock Sand & Gravel, LLC (0065983) → Portable Crusher #2 (45) (1001905)**

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

## Controller and operator valid-time history

- **Michael R  Smith  et al → G & B Redi-Mix:** 1994-05-01 through 2005-10-31; derived from co-tenure at mine 1001905; source `msha-controller-operator-history`.
- **Tamara J  De Boer  et al → G & B Redi-Mix:** 1994-05-01 through 2005-10-31; derived from co-tenure at mine 1001905; source `msha-controller-operator-history`.
- **Lance S Thueson et al → River Rock Sand & Gravel, LLC:** 2005-11-01 through current/open; derived from co-tenure at mine 1001905; source `msha-controller-operator-history`.
- **Janel  Thueson et al → River Rock Sand & Gravel, LLC:** 2005-11-01 through current/open; derived from co-tenure at mine 1001905; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 8
- 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 7 historical accident/injury rows; 0 coded fatalities and 7 lost days across the published record.
2. **COMPLIANCE — 4 since 2021:** Violations and penalties 73 violation rows across the full record; 11 carry an S&S flag and $7,605 appears in current assessed amounts.
3. **HEALTH — 13 samples:** Occupational health samples 13 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 — 0 tons:** Quarterly production and employment 331 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 26 linked rows:** Contests, conferences and decisions 13 contested-violation rows, 13 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 — 9 since 2021:** Inspections 51 inspection events and 519 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 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **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 46.6 — Newly hired experienced miner training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.6
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **30 CFR 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **30 CFR 56.9303 — Construction of ramps and dumping facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9303
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101

## Source coverage

- **Accident, Injuries, and Illnesses:** 7 rows; 2001-08-17 through 2004-11-08; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-09-12 through 2025-09-12; source ID `msha-addresses`
- **Assessed Violations:** 73 rows; 2000-07-05 through 2024-10-01; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 13 rows; 2011-03-16 through 2012-05-22; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 13 rows; 2009-11-09 through 2010-01-13; source ID `msha-contested-violations`
- **Controller and Operator History:** 4 rows; 1994-05-01 through 2005-11-01; source ID `msha-controller-operator-history`
- **Inspections:** 51 rows; 2000-07-05 through 2025-04-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 132 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 27 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:** 13 rows; 2003-03-17 through 2017-03-08; source ID `msha-personal-health-samples`
- **Violations:** 73 rows; 2000-07-05 through 2024-10-01; 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/portable-crusher-2-45-1001905`
- JSON: `/api/v1/mines/portable-crusher-2-45-1001905`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1001905/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1001905/relationships`
- MCP resource: `mine://1001905/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`