# Portable Plant  #1

- **MSHA mine ID:** 4702697
- **Status:** Intermittent
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Green Lake, WI
- **Operator:** Sam Gaastra & Sons Inc
- **Controller:** Jeffery A  Gaastra
- **Public source rows linked:** 245
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Jeffery A  Gaastra (0163161) → Sam Gaastra & Sons Inc (L07717) → Portable Plant  #1 (4702697)**

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

## Controller and operator valid-time history

- **Sam  Gaastra → Sam Gaastra & Sons Inc:** 1980-07-01 through 2021-05-23; derived from co-tenure at mine 4702697; source `msha-controller-operator-history`.
- **Jeffery A  Gaastra → Sam Gaastra & Sons Inc:** 2021-05-24 through current/open; derived from co-tenure at mine 4702697; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 — 10 since 2021:** Violations and penalties 44 violation rows across the full record; 8 carry an S&S flag and $7,732 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 26 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 22 linked rows:** Contests, conferences and decisions 11 contested-violation rows, 11 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 — 8 since 2021:** Inspections 28 inspection events and 296 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 56.14132 — 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.12001 — Circuit overload protection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12001
- **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 56.14107 — 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 56.11027 — Scaffolds and working platforms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11027
- **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 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **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 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.14108 — Overhead drive belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14108

## Source coverage

- **Addresses of Record:** 1 rows; 2019-06-19 through 2019-06-19; source ID `msha-addresses`
- **Assessed Violations:** 44 rows; 2010-03-31 through 2026-06-15; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 11 rows; 2011-10-28 through 2011-10-28; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 11 rows; 2010-03-31 through 2010-03-31; source ID `msha-contested-violations`
- **Controller and Operator History:** 2 rows; 1980-07-01 through 1980-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 28 rows; 2000-06-20 through 2026-06-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 81 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 20 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:** 2 rows; 2016-06-08 through 2016-06-08; source ID `msha-personal-health-samples`
- **Violations:** 44 rows; 2010-03-31 through 2026-06-15; 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-1-4702697`
- JSON: `/api/v1/mines/portable-plant-1-4702697`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4702697/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4702697/relationships`
- MCP resource: `mine://4702697/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`