# Winfield Quarry

- **MSHA mine ID:** 1401577
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Cowley, KS
- **Operator:** Whitaker Aggregates
- **Controller:** Curtis D  Whitaker
- **Public source rows linked:** 718
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Curtis D  Whitaker (0111601) → Whitaker Aggregates (0064184) → Winfield Quarry (1401577)**

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

## Controller and operator valid-time history

- **Larry L  Stewart et al → Service Mining Corp:** 1994-02-01 through 1996-12-08; derived from co-tenure at mine 1401577; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Aggregates:** 1996-12-09 through 2006-02-13; derived from co-tenure at mine 1401577; source `msha-controller-operator-history`.
- **Sandra K  Whitaker et al → Whitaker Aggregates:** 2006-02-14 through 2013-12-31; derived from co-tenure at mine 1401577; source `msha-controller-operator-history`.
- **Curtis D  Whitaker et al → Whitaker Aggregates:** 2006-02-14 through 2013-12-31; derived from co-tenure at mine 1401577; source `msha-controller-operator-history`.
- **Curtis D  Whitaker → Whitaker Aggregates:** 2014-01-01 through current/open; derived from co-tenure at mine 1401577; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 12
- 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 1 historical accident/injury rows; 0 coded fatalities and 37 lost days across the published record.
2. **COMPLIANCE — 33 since 2021:** Violations and penalties 131 violation rows across the full record; 20 carry an S&S flag and $23,449 appears in current assessed amounts.
3. **HEALTH — 14 samples:** Occupational health samples 14 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 6K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 30 linked rows:** Contests, conferences and decisions 13 contested-violation rows, 13 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 14 since 2021:** Inspections 64 inspection events and 846 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 56.6132 — Magazine requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6132
- **30 CFR 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **30 CFR 56.12028 — Testing grounding systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.15001 — First-aid materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15001
- **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 56.12008 — 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 56.12013 — 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 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **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 56.12018 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2010-04-08 through 2010-04-08; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2006-08-07 through 2006-08-07; source ID `msha-addresses`
- **Assessed Violations:** 127 rows; 2000-04-06 through 2026-02-25; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 13 rows; 2007-03-14 through 2011-03-16; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2008-06-27 through 2008-06-27; source ID `msha-conferences`
- **Contested Violations:** 13 rows; 2006-05-16 through 2010-06-14; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 152 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 10 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1994-02-01 through 2006-02-14; source ID `msha-controller-operator-history`
- **Inspections:** 64 rows; 2000-03-14 through 2026-08-19; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 148 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 34 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:** 14 rows; 2006-05-17 through 2023-05-24; source ID `msha-personal-health-samples`
- **Violations:** 131 rows; 2000-04-06 through 2026-08-19; 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/winfield-quarry-1401577`
- JSON: `/api/v1/mines/winfield-quarry-1401577`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1401577/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1401577/relationships`
- MCP resource: `mine://1401577/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`