# Tarrtown Plant 1

- **MSHA mine ID:** 3603183
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Armstrong, PA
- **Operator:** Glacial Sand & Gravel Company
- **Controller:** Snyder Associated Companies Inc
- **Public source rows linked:** 423
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Snyder Associated Companies Inc (M00734) → Glacial Sand & Gravel Company (L00967) → Tarrtown Plant 1 (3603183)**

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

## Controller and operator valid-time history

- **Snyder Associated Companies Inc → Glacial Sand & Gravel Company:** 1950-01-01 through current/open; derived from co-tenure at mine 3603183; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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 — 0 since 2021:** Accidents and injuries 14 historical accident/injury rows; 0 coded fatalities and 45 lost days across the published record.
2. **COMPLIANCE — 3 since 2021:** Violations and penalties 86 violation rows across the full record; 13 carry an S&S flag and $10,442 appears in current assessed amounts.
3. **HEALTH — 80 samples:** Occupational health samples 80 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 6K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 12 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 6 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 2 since 2021:** Inspections 60 inspection events and 979 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 56.14205 — 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 56.14211 — Blocking equipment in a raised position.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14211
- **30 CFR 56.12032 — Inspection and cover plates.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.12034 — Guarding around lights.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12034
- **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 56.12028 — 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 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 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130

## Source coverage

- **Accident, Injuries, and Illnesses:** 14 rows; 2000-03-20 through 2020-06-05; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2021-09-29 through 2021-09-29; source ID `msha-addresses`
- **Assessed Violations:** 86 rows; 2000-05-23 through 2021-06-29; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 6 rows; 2010-04-02 through 2019-11-26; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 6 rows; 2009-05-05 through 2019-06-04; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 20 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 60 rows; 2000-05-23 through 2021-06-28; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 16 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 40 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:** 80 rows; 2002-04-24 through 2021-02-23; source ID `msha-personal-health-samples`
- **Violations:** 86 rows; 2000-05-23 through 2021-06-29; 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/tarrtown-plant-1-3603183`
- JSON: `/api/v1/mines/tarrtown-plant-1-3603183`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3603183/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3603183/relationships`
- MCP resource: `mine://3603183/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`