# Piqua Materials

- **MSHA mine ID:** 3300008
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Miami, OH
- **Operator:** Piqua Materials Inc
- **Controller:** James P  Jurgensen II; Jacqueline J  Alf; Jason R  Jurgensen
- **Public source rows linked:** 1,988
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**James P  Jurgensen II; Jacqueline J  Alf; Jason R  Jurgensen (0142503) → Piqua Materials Inc (L11254) → Piqua Materials (3300008)**

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

## Controller and operator valid-time history

- **Armco Inc → Armco Inc:** 1950-01-01 through 1989-09-30; derived from co-tenure at mine 3300008; source `msha-controller-operator-history`.
- **James P  Jurgensen → Piqua Materials Inc:** 1989-10-01 through 2018-10-31; derived from co-tenure at mine 3300008; source `msha-controller-operator-history`.
- **Jason R  Jurgensen et al → Piqua Materials Inc:** 2018-11-01 through current/open; derived from co-tenure at mine 3300008; source `msha-controller-operator-history`.
- **James P  Jurgensen II et al → Piqua Materials Inc:** 2018-11-01 through current/open; derived from co-tenure at mine 3300008; source `msha-controller-operator-history`.
- **Jacqueline J  Alf et al → Piqua Materials Inc:** 2018-11-01 through current/open; derived from co-tenure at mine 3300008; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 10
- 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 24 historical accident/injury rows; 0 coded fatalities and 385 lost days across the published record.
2. **COMPLIANCE — 50 since 2021:** Violations and penalties 270 violation rows across the full record; 53 carry an S&S flag and $41,252 appears in current assessed amounts.
3. **HEALTH — 118 samples:** Occupational health samples 114 personal; 4 area. 27 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 13K employee hours and 20 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 11 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 4 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 10 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 — 18 since 2021:** Inspections 93 inspection events and 3K 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 56.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14109
- **30 CFR 56.14112 — Construction and maintenance of guards.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.14207 — Parking procedures for unattended equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **30 CFR 56.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205
- **30 CFR 56.11001 — Safe access.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 24 rows; 2000-11-24 through 2025-10-16; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1978-07-10 through 1978-07-10; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 4 rows; 2009-06-30 through 2015-08-11; source ID `msha-area-samples`
- **Assessed Violations:** 255 rows; 2000-04-04 through 2026-02-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2004-03-23 through 2016-11-30; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2003-10-15 through 2018-07-31; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2010-08-10 through 2016-07-06; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 657 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 154 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 1989-10-01; source ID `msha-controller-operator-history`
- **Inspections:** 93 rows; 2000-02-01 through 2026-09-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 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:** 114 rows; 2001-06-13 through 2026-09-09; source ID `msha-personal-health-samples`
- **Violations:** 270 rows; 2000-04-04 through 2026-09-03; 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/piqua-materials-3300008`
- JSON: `/api/v1/mines/piqua-materials-3300008`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3300008/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3300008/relationships`
- MCP resource: `mine://3300008/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`