# Portable Plant #3

- **MSHA mine ID:** 3304745
- **Status:** Intermittent
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Green, KY
- **Operator:** Cardinal Aggregate
- **Controller:** Brad  Miller
- **Public source rows linked:** 70
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Brad  Miller (0144341) → Cardinal Aggregate (0050672) → Portable Plant #3 (3304745)**

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

## Controller and operator valid-time history

- **Mark  Murray → Cardinal Aggregate:** 2018-11-07 through 2015-08-16; derived from co-tenure at mine 3304745; source `msha-controller-operator-history`.
- **Brad  Miller → Cardinal Aggregate:** 2018-11-07 through current/open; derived from co-tenure at mine 3304745; source `msha-controller-operator-history`.
- **Dean E Miller → Cardinal Aggregate:** 2018-11-07 through 2015-12-31; derived from co-tenure at mine 3304745; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 7
- Interval anomalies: 2
- 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 — 3 since 2021:** Violations and penalties 6 violation rows across the full record; 1 carry an S&S flag and $740 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 5 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 4 since 2021:** Inspections 7 inspection events and 66 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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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 56.12008 — 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 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 56.4601 — Oxygen cylinder storage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4601
- **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; 2025-06-30 through 2025-06-30; source ID `msha-addresses`
- **Assessed Violations:** 6 rows; 2019-04-23 through 2021-08-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2020-02-19 through 2020-02-19; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 3 rows; 2021-09-17 through 2021-09-17; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2019-10-15 through 2019-10-15; source ID `msha-contested-violations`
- **Controller and Operator History:** 3 rows; 2018-11-07 through 2018-11-07; source ID `msha-controller-operator-history`
- **Inspections:** 7 rows; 2019-04-23 through 2026-08-12; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 30 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 9 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:** 2 rows; 2019-10-16 through 2019-10-16; source ID `msha-personal-health-samples`
- **Violations:** 6 rows; 2019-04-23 through 2021-08-24; 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/portable-plant-3-3304745`
- JSON: `/api/v1/mines/portable-plant-3-3304745`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304745/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304745/relationships`
- MCP resource: `mine://3304745/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`