# Portable Crusher B

- **MSHA mine ID:** 4503376
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Whatcom, WA
- **Operator:** Aggregates West Inc
- **Controller:** David  Grainger
- **Public source rows linked:** 426
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**David  Grainger (M09187) → Aggregates West Inc (L11920) → Portable Crusher B (4503376)**

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

## Controller and operator valid-time history

- **David  Grainger → Aggregates West Inc:** 1998-05-01 through current/open; derived from co-tenure at mine 4503376; 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 2 historical accident/injury rows; 0 coded fatalities and 3 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 102 violation rows across the full record; 20 carry an S&S flag and $15,691 appears in current assessed amounts.
3. **HEALTH — 5 samples:** Occupational health samples 5 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 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 59 linked rows:** Contests, conferences and decisions 9 contested-violation rows, 39 civil-penalty docket/decision rows, and 11 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 — 0 since 2021:** Inspections 23 inspection events and 368 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 56.18010 — First aid.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18010
- **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 56.9300 — 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 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **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 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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 56.12028 — 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 56.9301 — Dump site restraints.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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:** 2 rows; 2000-10-06 through 2005-10-25; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-12-01 through 2014-12-01; source ID `msha-addresses`
- **Assessed Violations:** 100 rows; 2000-08-16 through 2014-10-09; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 39 rows; 2001-06-05 through 2013-04-24; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 11 rows; 2010-08-02 through 2010-08-02; source ID `msha-conferences`
- **Contested Violations:** 9 rows; 2010-05-11 through 2012-12-17; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 8 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Controller and Operator History:** 1 rows; 1998-05-01 through 1998-05-01; source ID `msha-controller-operator-history`
- **Inspections:** 23 rows; 2000-08-16 through 2014-10-07; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 97 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:** 5 rows; 2005-03-30 through 2010-05-17; source ID `msha-personal-health-samples`
- **Violations:** 102 rows; 2000-08-16 through 2014-10-09; 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-b-4503376`
- JSON: `/api/v1/mines/portable-crusher-b-4503376`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4503376/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4503376/relationships`
- MCP resource: `mine://4503376/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`