# RiverBend Materials Dalton

- **MSHA mine ID:** 3500631
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Polk, OR
- **Operator:** RiverBend Materials
- **Controller:** CRH PLC
- **Public source rows linked:** 998
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → RiverBend Materials (L00029) → RiverBend Materials Dalton (3500631)**

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

## Controller and operator valid-time history

- **Andrew  Lalack → La Creole Lumber & Rock Company Inc:** 1950-01-01 through 1993-04-21; derived from co-tenure at mine 3500631; source `msha-controller-operator-history`.
- **J C Compton Company → Valley Concrete & Gravel Company:** 1993-04-22 through 2006-06-30; derived from co-tenure at mine 3500631; source `msha-controller-operator-history`.
- **CRH PLC → RiverBend Materials:** 2006-07-01 through current/open; derived from co-tenure at mine 3500631; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 9
- 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 — 1 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 14 since 2021:** Violations and penalties 68 violation rows across the full record; 9 carry an S&S flag and $9,102 appears in current assessed amounts.
3. **HEALTH — 9 samples:** Occupational health samples 9 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 5K employee hours and 13 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 14 since 2021:** Inspections 52 inspection events and 632 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 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.11002 — 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 56.11001 — 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 56.4130 — Electric substations and liquid storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4130
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2006-03-13 through 2023-11-28; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-10-15 through 2013-10-15; source ID `msha-addresses`
- **Assessed Violations:** 68 rows; 2000-07-18 through 2025-04-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2011-04-06 through 2011-04-06; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2016-04-11 through 2016-04-11; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2010-02-17 through 2010-02-17; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 407 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 79 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 2006-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 52 rows; 2000-07-18 through 2026-09-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 253 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 50 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:** 9 rows; 2005-03-08 through 2025-02-04; source ID `msha-personal-health-samples`
- **Violations:** 68 rows; 2000-07-18 through 2025-04-17; 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/riverbend-materials-dalton-3500631`
- JSON: `/api/v1/mines/riverbend-materials-dalton-3500631`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3500631/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3500631/relationships`
- MCP resource: `mine://3500631/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`