# Gerke Plant #1

- **MSHA mine ID:** 4703357
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Monroe, WI
- **Operator:** Gerke Excavating Inc
- **Controller:** Paul W/and Diana Gerke Family Trust; Chad  Gerke; Jay  Gerke
- **Public source rows linked:** 682
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Paul W/and Diana Gerke Family Trust; Chad  Gerke; Jay  Gerke (0202863) → Gerke Excavating Inc (0051398) → Gerke Plant #1 (4703357)**

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

## Controller and operator valid-time history

- **Richard A  Gerke  et al → Gerke Excavating Inc:** 2003-05-12 through 2026-03-31; derived from co-tenure at mine 4703357; source `msha-controller-operator-history`.
- **Jay  Gerke et al → Gerke Excavating Inc:** 2026-04-01 through current/open; derived from co-tenure at mine 4703357; source `msha-controller-operator-history`.
- **Chad  Gerke et al → Gerke Excavating Inc:** 2026-04-01 through current/open; derived from co-tenure at mine 4703357; source `msha-controller-operator-history`.
- **Paul W/and Diana Gerke Family Trust et al → Gerke Excavating Inc:** 2026-04-01 through current/open; derived from co-tenure at mine 4703357; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 7
- 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 10 lost days across the published record.
2. **COMPLIANCE — 6 since 2021:** Violations and penalties 63 violation rows across the full record; 12 carry an S&S flag and $8,063 appears in current assessed amounts.
3. **HEALTH — 10 samples:** Occupational health samples 10 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 7 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 6 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 — 11 since 2021:** Inspections 44 inspection events and 505 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 56.9300 — Berms or guardrails.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **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 56.14110 — Flying or falling materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14110
- **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 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 56.11002 — 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 56.12013 — Splices and repairs of power cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12013
- **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 56.12008 — 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 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2013-08-29 through 2026-07-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2015-07-15 through 2015-07-15; source ID `msha-addresses`
- **Assessed Violations:** 63 rows; 2004-02-25 through 2025-10-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2014-09-03 through 2014-09-03; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 6 rows; 2006-12-15 through 2015-01-09; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2014-04-02 through 2014-04-02; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 212 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 44 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2003-05-12 through 2003-05-12; source ID `msha-controller-operator-history`
- **Inspections:** 44 rows; 2003-08-05 through 2026-05-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 182 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 47 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:** 10 rows; 2004-02-25 through 2020-11-05; source ID `msha-personal-health-samples`
- **Violations:** 63 rows; 2004-02-25 through 2025-10-07; 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/gerke-plant-1-4703357`
- JSON: `/api/v1/mines/gerke-plant-1-4703357`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4703357/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4703357/relationships`
- MCP resource: `mine://4703357/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`