# JKL QUARRY

- **MSHA mine ID:** 4300681
- **Status:** Intermittent
- **Type / commodity:** Surface / Dimension Slate
- **Location:** Rutland, VT
- **Operator:** GREENSTONE SLATE CO.
- **Controller:** Edward  Vladyka; Jonathan  Hill
- **Public source rows linked:** 381
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Edward  Vladyka; Jonathan  Hill (0181881) → GREENSTONE SLATE CO. (0087245) → JKL QUARRY (4300681)**

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

## Controller and operator valid-time history

- **Richard L  Hill → Greenstone Slate Co.:** 2007-11-06 through 2024-01-17; derived from co-tenure at mine 4300681; source `msha-controller-operator-history`.
- **Edward  Vladyka et al → Greenstone Slate Co.:** 2024-01-18 through current/open; derived from co-tenure at mine 4300681; source `msha-controller-operator-history`.
- **Jonathan  Hill et al → Greenstone Slate Co.:** 2024-01-18 through current/open; derived from co-tenure at mine 4300681; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 6
- 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 — 0 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 376 lost days across the published record.
2. **COMPLIANCE — 6 since 2021:** Violations and penalties 57 violation rows across the full record; 11 carry an S&S flag and $6,785 appears in current assessed amounts.
3. **HEALTH — 16 samples:** Occupational health samples 16 personal. 6 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 20 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 5 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 1 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 — 8 since 2021:** Inspections 43 inspection events and 701 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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **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 56.14132 — 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 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.5001 — Exposure limits for airborne contaminants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001
- **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 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2008-02-01 through 2017-08-30; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2024-08-09 through 2024-08-09; source ID `msha-addresses`
- **Assessed Violations:** 57 rows; 2007-12-04 through 2026-05-12; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2009-12-17 through 2014-04-14; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2013-09-30 through 2013-09-30; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2008-11-18 through 2013-07-31; source ID `msha-contested-violations`
- **Controller and Operator History:** 3 rows; 2007-11-06 through 2007-11-06; source ID `msha-controller-operator-history`
- **Inspections:** 43 rows; 2007-12-04 through 2026-05-12; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 162 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 33 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:** 16 rows; 2009-01-07 through 2019-07-23; source ID `msha-personal-health-samples`
- **Violations:** 57 rows; 2007-12-04 through 2026-05-12; 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/jkl-quarry-4300681`
- JSON: `/api/v1/mines/jkl-quarry-4300681`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4300681/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4300681/relationships`
- MCP resource: `mine://4300681/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`