# NORWAY GROVE GRAVEL PLANT

- **MSHA mine ID:** 4701992
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Dane, WI
- **Operator:** Madison Sand & Gravel Company Inc
- **Controller:** Karen  Taff
- **Public source rows linked:** 843
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Karen  Taff (0116965) → Madison Sand & Gravel Company Inc (L00718) → NORWAY GROVE GRAVEL PLANT (4701992)**

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

## Controller and operator valid-time history

- **Calvin R  Ziegler → Madison Sand & Gravel Company Inc:** 1950-01-01 through 2015-03-03; derived from co-tenure at mine 4701992; source `msha-controller-operator-history`.
- **Karen  Taff → Madison Sand & Gravel Company Inc:** 2015-03-04 through current/open; derived from co-tenure at mine 4701992; 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: 2026-10-18T09:31:49.615908+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 — 33 since 2021:** Violations and penalties 150 violation rows across the full record; 24 carry an S&S flag and $23,311 appears in current assessed amounts.
3. **HEALTH — 11 samples:** Occupational health samples 11 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 4K employee hours and 9 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 3 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 16 since 2021:** Inspections 70 inspection events and 1K 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 56.9301 — Dump site restraints.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **30 CFR 56.14112 — Construction and maintenance of guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.14115 — Stationary grinding machines.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14115
- **30 CFR 56.20001 — Intoxicating beverages and narcotics.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20001
- **30 CFR 56.12032 — Inspection and cover plates.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207

## Source coverage

- **Addresses of Record:** 1 rows; 2005-03-18 through 2005-03-18; source ID `msha-addresses`
- **Assessed Violations:** 150 rows; 2001-04-04 through 2026-07-13; source ID `msha-assessed-violations`
- **Conferences:** 3 rows; 2002-06-24 through 2013-03-18; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 148 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 45 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 70 rows; 2001-04-04 through 2026-07-12; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 208 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:** 11 rows; 2008-06-18 through 2021-03-31; source ID `msha-personal-health-samples`
- **Violations:** 150 rows; 2001-04-04 through 2026-07-13; 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/norway-grove-gravel-plant-4701992`
- JSON: `/api/v1/mines/norway-grove-gravel-plant-4701992`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4701992/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4701992/relationships`
- MCP resource: `mine://4701992/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`