# Eagle #2, Portable Plant

- **MSHA mine ID:** 2301170
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Cass, MO
- **Operator:** Hilty Quarries, Inc.
- **Controller:** CRH PLC
- **Public source rows linked:** 188
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Hilty Quarries, Inc. (L01657) → Eagle #2, Portable Plant (2301170)**

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

## Controller and operator valid-time history

- **George T  Ryberg → A & M Quarries Inc:** 1950-01-01 through 1984-04-25; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **Harlan L  Limpus et al → Limpus Quarries Inc:** 1984-04-26 through 1996-08-06; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **Ashland Inc → Limpus Quarries Inc:** 1996-08-07 through 2006-08-27; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **CRH PLC → Limpus Quarries Inc:** 2006-08-28 through 2007-12-31; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **Ashland Inc → APAC Kansas Inc:** 2008-01-01 through 2006-08-27; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **CRH PLC → APAC Kansas Inc:** 2008-01-01 through 2012-04-17; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **John  Hilty  et al → Hilty Quarries, Inc.:** 2012-04-18 through 2009-11-03; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.
- **CRH PLC → Hilty Quarries, Inc.:** 2012-04-18 through current/open; derived from co-tenure at mine 2301170; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 20
- 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: 2026-10-13T11:19:05.459773+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 — 0 since 2021:** Violations and penalties 8 violation rows across the full record; 2 carry an S&S flag and $813 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 personal. 2 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 798 employee hours and 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 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 — 0 since 2021:** Inspections 17 inspection events and 183 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 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.5001 — Exposure limits for airborne contaminants.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001
- **30 CFR 62.130 — Permissible exposure level.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.130
- **30 CFR 56.18010 — First aid.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18010
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **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

- **Addresses of Record:** 1 rows; 2012-10-01 through 2012-10-01; source ID `msha-addresses`
- **Assessed Violations:** 8 rows; 2001-04-24 through 2008-11-19; source ID `msha-assessed-violations`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2012-04-18; source ID `msha-controller-operator-history`
- **Inspections:** 17 rows; 2001-04-24 through 2012-09-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 113 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 24 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:** 8 rows; 2004-04-07 through 2008-04-15; source ID `msha-personal-health-samples`
- **Violations:** 8 rows; 2001-04-24 through 2008-11-19; 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/eagle-2-portable-plant-2301170`
- JSON: `/api/v1/mines/eagle-2-portable-plant-2301170`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2301170/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2301170/relationships`
- MCP resource: `mine://2301170/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`