# Maricopa Plant

- **MSHA mine ID:** 0402638
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Kern, CA
- **Operator:** Nestle Purina PetCare Company
- **Controller:** Nestle S A
- **Public source rows linked:** 817
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Nestle S A (0041035) → Nestle Purina PetCare Company (0050705) → Maricopa Plant (0402638)**

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

## Controller and operator valid-time history

- **Maricopa Mining Inc → Panamint Marketing Company Inc:** 1950-01-01 through 1980-05-21; derived from co-tenure at mine 0402638; source `msha-controller-operator-history`.
- **Edward Lowe Industries Inc → Southern Clay-Div/Edward Lowe Industries Inc:** 1980-05-22 through 1991-01-22; derived from co-tenure at mine 0402638; source `msha-controller-operator-history`.
- **Good Capital Inc & Knightsbridge Inc → Golden Cat Corp:** 1991-01-23 through 1995-05-14; derived from co-tenure at mine 0402638; source `msha-controller-operator-history`.
- **Ralston Purina Company → Ralston Purina Company:** 1995-05-15 through 2001-12-11; derived from co-tenure at mine 0402638; source `msha-controller-operator-history`.
- **Nestle S A → Nestle Purina PetCare Company:** 2002-01-12 through current/open; derived from co-tenure at mine 0402638; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 15
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 41 historical accident/injury rows; 0 coded fatalities and 847 lost days across the published record.
2. **COMPLIANCE — 32 since 2021:** Violations and penalties 186 violation rows across the full record; 51 carry an S&S flag and $63,681 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 42K employee hours and 75 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 8 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 — 15 since 2021:** Inspections 65 inspection events and 2K 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 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023
- **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 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 50.20-7 — Criteria—MSHA Form 7000-1, Section D.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20-7
- **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 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 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003

## Source coverage

- **Accident, Injuries, and Illnesses:** 41 rows; 2000-01-26 through 2023-01-13; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1988-07-19 through 1988-07-19; source ID `msha-addresses`
- **Assessed Violations:** 186 rows; 2000-06-06 through 2025-12-02; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2012-02-23 through 2012-07-11; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 4 rows; 2010-07-14 through 2011-06-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 156 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 37 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2001-12-12; source ID `msha-controller-operator-history`
- **Inspections:** 65 rows; 2000-06-06 through 2026-04-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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; 2002-01-17 through 2026-04-29; source ID `msha-personal-health-samples`
- **Violations:** 186 rows; 2000-06-06 through 2025-12-02; 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/maricopa-plant-0402638`
- JSON: `/api/v1/mines/maricopa-plant-0402638`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0402638/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0402638/relationships`
- MCP resource: `mine://0402638/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`