# Irish Hill Portable Plant No. 1

- **MSHA mine ID:** 0405660
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Amador, CA
- **Operator:** Newman Minerals, LLC
- **Controller:** John C  Telischak; William  Bunce
- **Public source rows linked:** 368
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**John C  Telischak; William  Bunce (0104473) → Newman Minerals, LLC (0123030) → Irish Hill Portable Plant No. 1 (0405660)**

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

## Controller and operator valid-time history

- **Edwin O  DeSilva et al → DeSilva Gates Construction:** 2005-09-29 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **Richard B  Gates et al → DeSilva Gates Construction:** 2005-09-29 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **Top Grade Construction → SGC Materials, Inc.:** 2009-09-17 through 2013-04-29; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **William  Bunce et al → Newman Minerals, LLC:** 2013-04-30 through current/open; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **John C  Telischak et al → Newman Minerals, LLC:** 2013-04-30 through current/open; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **Richard B Gates et al → DeSilva Gates Construction:** 2022-05-05 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **De Silva Holding Company Inc et al → DeSilva Gates Construction:** 2022-05-05 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **Oliver DeSilva Inc et al → DeSilva Gates Construction:** 2025-04-11 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **El Portal Real Estate Co et al → DeSilva Gates Construction:** 2025-04-11 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **Richard B Gates et al → DeSilva Gates Construction:** 2025-12-19 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.
- **De Silva Holding Company Inc et al → DeSilva Gates Construction:** 2025-12-19 through 2009-09-16; derived from co-tenure at mine 0405660; source `msha-controller-operator-history`.

- History rows: 11
- Typed edges: 20
- Interval anomalies: 6
- 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 2 historical accident/injury rows; 0 coded fatalities and 113 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 44 violation rows across the full record; 8 carry an S&S flag and $4,573 appears in current assessed amounts.
3. **HEALTH — 5 samples:** Occupational health samples 5 personal. 1 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 32 employee hours and 2 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 21 linked rows:** Contests, conferences and decisions 9 contested-violation rows, 9 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 24 inspection events and 268 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 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **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 56.11027 — Scaffolds and working platforms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11027
- **30 CFR 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **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 56.14207 — 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
- **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 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.13015 — Inspection of compressed-air receivers and other unfired pressure vessels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13015

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2007-01-27 through 2014-09-22; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2019-03-15 through 2019-03-15; source ID `msha-addresses`
- **Assessed Violations:** 44 rows; 2006-03-15 through 2016-10-19; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 9 rows; 2012-02-15 through 2012-12-27; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 3 rows; 2006-04-07 through 2007-06-01; source ID `msha-conferences`
- **Contested Violations:** 9 rows; 2010-06-23 through 2012-06-13; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 80 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 18 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 11 rows; 2005-09-29 through 2013-04-30; source ID `msha-controller-operator-history`
- **Inspections:** 24 rows; 2006-03-15 through 2018-03-14; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 92 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 25 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:** 5 rows; 2010-06-23 through 2015-05-06; source ID `msha-personal-health-samples`
- **Violations:** 44 rows; 2006-03-15 through 2016-10-19; 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/irish-hill-portable-plant-no-1-0405660`
- JSON: `/api/v1/mines/irish-hill-portable-plant-no-1-0405660`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0405660/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0405660/relationships`
- MCP resource: `mine://0405660/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`