# PORTABLE CRUSHER

- **MSHA mine ID:** 1901013
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Essex, MA
- **Operator:** Bentley Warren Trucking Inc
- **Controller:** Bentley  Warren
- **Public source rows linked:** 589
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Bentley  Warren (M08045) → Bentley Warren Trucking Inc (L10318) → PORTABLE CRUSHER (1901013)**

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

## Controller and operator valid-time history

- **Bentley  Warren → Bentley Warren Trucking Inc:** 1988-07-01 through current/open; derived from co-tenure at mine 1901013; 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 30 since 2021:** Violations and penalties 100 violation rows across the full record; 18 carry an S&S flag and $14,241 appears in current assessed amounts.
3. **HEALTH — 69 samples:** Occupational health samples 69 personal. 1 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 4K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 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 — 12 since 2021:** Inspections 50 inspection events and 734 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 56.4201 — 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 56.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14109
- **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 56.12016 — Work on electrically-powered equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12016
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23002
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **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 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 56.12008 — 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

## Source coverage

- **Addresses of Record:** 1 rows; 2010-02-04 through 2010-02-04; source ID `msha-addresses`
- **Assessed Violations:** 100 rows; 2000-04-11 through 2025-09-04; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2017-03-17 through 2017-03-17; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 1 rows; 2016-05-26 through 2016-05-26; source ID `msha-contested-violations`
- **Controller and Operator History:** 1 rows; 1988-07-01 through 1988-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 50 rows; 2000-04-11 through 2026-07-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 211 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 69 rows; 2002-06-27 through 2023-02-13; source ID `msha-personal-health-samples`
- **Violations:** 100 rows; 2000-04-11 through 2025-09-04; 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-1901013`
- JSON: `/api/v1/mines/portable-crusher-1901013`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1901013/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1901013/relationships`
- MCP resource: `mine://1901013/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`