# Allied Rock Portable Crusher #1

- **MSHA mine ID:** 3503688
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Marion, OR
- **Operator:** RiverBend Materials
- **Controller:** CRH PLC
- **Public source rows linked:** 400
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**CRH PLC (M06183) → RiverBend Materials (L00029) → Allied Rock Portable Crusher #1 (3503688)**

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

## Controller and operator valid-time history

- **Andrew L  Siegmund → Siegmund Excavation & Construction,  Inc.:** 2008-03-03 through 2019-05-18; derived from co-tenure at mine 3503688; source `msha-controller-operator-history`.
- **Andrew L  Siegmund → Allied Rock, L.L.C.:** 2019-05-19 through 2025-11-06; derived from co-tenure at mine 3503688; source `msha-controller-operator-history`.
- **Andrew  Siegmund et al → Allied Rock, L.L.C.:** 2019-05-19 through 2017-01-13; derived from co-tenure at mine 3503688; source `msha-controller-operator-history`.
- **Lou  Siegmund et al → Allied Rock, L.L.C.:** 2019-05-19 through 2017-01-13; derived from co-tenure at mine 3503688; source `msha-controller-operator-history`.
- **CRH PLC → RiverBend Materials:** 2025-11-07 through current/open; derived from co-tenure at mine 3503688; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 12
- Interval anomalies: 2
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 14 since 2021:** Violations and penalties 20 violation rows across the full record; 1 carry an S&S flag and $2,596 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 — 0 tons:** Quarterly production and employment 2K employee hours and 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 12 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 6 civil-penalty docket/decision rows, and 0 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 — 12 since 2021:** Inspections 17 inspection events and 166 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 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 56.11001 — Safe access.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **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 56.3200 — Correction of hazardous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3200
- **30 CFR 56.15007 — Protective equipment or clothing for welding, cutting, or working with molten metal.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15007
- **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 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **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 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2021-07-19 through 2021-07-19; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2024-07-01 through 2024-07-01; source ID `msha-addresses`
- **Assessed Violations:** 20 rows; 2008-06-30 through 2026-02-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 6 rows; 2011-01-26 through 2023-06-15; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 6 rows; 2009-02-18 through 2023-02-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 188 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 48 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2008-03-03 through 2025-11-07; source ID `msha-controller-operator-history`
- **Inspections:** 17 rows; 2008-06-30 through 2026-07-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 61 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 18 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; 2009-02-19 through 2026-02-05; source ID `msha-personal-health-samples`
- **Violations:** 20 rows; 2008-06-30 through 2026-02-05; 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/allied-rock-portable-crusher-1-3503688`
- JSON: `/api/v1/mines/allied-rock-portable-crusher-1-3503688`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3503688/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3503688/relationships`
- MCP resource: `mine://3503688/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`