# Portable Plant  #2

- **MSHA mine ID:** 3200151
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Grand Forks, ND
- **Operator:** Strata Corporation
- **Controller:** Knife River Corporation
- **Public source rows linked:** 344
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Knife River Corporation (0176802) → Strata Corporation (L09644) → Portable Plant  #2 (3200151)**

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

## Controller and operator valid-time history

- **Ken  Dusek  et al → Dusek Sand & Gravel Inc:** 1950-01-01 through 1990-05-28; derived from co-tenure at mine 3200151; source `msha-controller-operator-history`.
- **Donald  Dusek  et al → Dusek Sand & Gravel Inc:** 1950-01-01 through 1990-05-28; derived from co-tenure at mine 3200151; source `msha-controller-operator-history`.
- **James R  Bradshaw et al → Strata Corporation:** 1990-05-29 through 2026-03-22; derived from co-tenure at mine 3200151; source `msha-controller-operator-history`.
- **Knife River Corporation → Strata Corporation:** 2026-03-23 through current/open; derived from co-tenure at mine 3200151; source `msha-controller-operator-history`.

- History rows: 4
- 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 — 0 since 2021:** Accidents and injuries 5 historical accident/injury rows; 0 coded fatalities and 3 lost days across the published record.
2. **COMPLIANCE — 6 since 2021:** Violations and penalties 42 violation rows across the full record; 19 carry an S&S flag and $7,577 appears in current assessed amounts.
3. **HEALTH — 7 samples:** Occupational health samples 6 personal; 1 area. 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 7 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 3 civil-penalty docket/decision rows, and 3 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 — 6 since 2021:** Inspections 28 inspection events and 361 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 56.12004 — Electrical conductors.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **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 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **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 56.14130 — 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 56.11002 — 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 56.14105 — Procedures during repairs or maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14105

## Source coverage

- **Accident, Injuries, and Illnesses:** 5 rows; 2000-10-10 through 2016-04-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2015-11-13 through 2015-11-13; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 1 rows; 2017-06-28 through 2017-06-28; source ID `msha-area-samples`
- **Assessed Violations:** 41 rows; 2001-05-09 through 2026-07-20; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2001-12-19 through 2015-06-30; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 3 rows; 2017-07-25 through 2017-07-25; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2014-07-21 through 2014-07-21; source ID `msha-contested-violations`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 1990-05-29; source ID `msha-controller-operator-history`
- **Inspections:** 28 rows; 2001-05-09 through 2026-07-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 175 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 32 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:** 6 rows; 2012-02-29 through 2021-10-26; source ID `msha-personal-health-samples`
- **Violations:** 42 rows; 2001-05-09 through 2026-07-20; 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-plant-2-3200151`
- JSON: `/api/v1/mines/portable-plant-2-3200151`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3200151/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3200151/relationships`
- MCP resource: `mine://3200151/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`