# Enon Sand & Gravel - **MSHA mine ID:** 3301466 - **Status:** Active - **Type / commodity:** Surface / Construction Sand and Gravel - **Location:** Clark, OH - **Operator:** Enon Sand & Gravel LLC - **Controller:** James P Jurgensen II; Jacqueline J Alf; Jason R Jurgensen - **Public source rows linked:** 1,799 - **Source coverage:** 15 / 20 - **Generated:** 2026-10-17T06:17:15.228Z ## Current entity hierarchy **James P Jurgensen II; Jacqueline J Alf; Jason R Jurgensen (0142503) → Enon Sand & Gravel LLC (0051898) → Enon Sand & Gravel (3301466)** Current identity source: `msha-mines`. This is a current snapshot, not a historical claim. ## Controller and operator valid-time history - **John F Steele Jr → Hilltop Basic Resources Inc:** 1950-01-01 through 2003-12-31; derived from co-tenure at mine 3301466; source `msha-controller-operator-history`. - **James P Jurgensen → Enon Sand & Gravel LLC:** 2004-01-01 through 2018-10-16; derived from co-tenure at mine 3301466; source `msha-controller-operator-history`. - **James P Jurgensen II et al → Enon Sand & Gravel LLC:** 2018-10-17 through current/open; derived from co-tenure at mine 3301466; source `msha-controller-operator-history`. - **Jason R Jurgensen et al → Enon Sand & Gravel LLC:** 2018-10-17 through current/open; derived from co-tenure at mine 3301466; source `msha-controller-operator-history`. - **Jacqueline J Alf et al → Enon Sand & Gravel LLC:** 2018-10-17 through current/open; derived from co-tenure at mine 3301466; source `msha-controller-operator-history`. - History rows: 5 - Typed edges: 10 - 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 — 1 since 2021:** Accidents and injuries 9 historical accident/injury rows; 1 coded fatalities and 25 lost days across the published record. 2. **COMPLIANCE — 13 since 2021:** Violations and penalties 130 violation rows across the full record; 26 carry an S&S flag and $32,209 appears in current assessed amounts. 3. **HEALTH — 26 samples:** Occupational health samples 26 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 6K employee hours and 12 summed average employees across reported subunits in the latest published quarter. 5. **LEGAL — 35 linked rows:** Contests, conferences and decisions 16 contested-violation rows, 17 civil-penalty docket/decision rows, and 2 conference records linked by issuance number. 6. **CONTRACTORS — 7 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 — 12 since 2021:** Inspections 68 inspection events and 1K 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 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032 - **30 CFR 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201 - **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 46.12 — Responsibility for independent contractor training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.12 - **30 CFR 48.6 — Experienced miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-A/section-48.6 - **30 CFR 48.29 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.29 - **30 CFR 48.3 — Training plans; time of submission; where filed; information required; time for approval; method for disapproval; commencement of training; approval of instructors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-A/section-48.3 - **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 56.14112 — 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 41.12 — Changes; notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.12 - **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:** 9 rows; 2009-02-25 through 2022-10-06; source ID `msha-accidents` - **Addresses of Record:** 1 rows; 2004-09-27 through 2004-09-27; source ID `msha-addresses` - **Assessed Violations:** 129 rows; 2000-06-27 through 2026-06-09; source ID `msha-assessed-violations` - **Civil Penalty Dockets and Decisions:** 17 rows; 2005-02-08 through 2022-07-05; source ID `msha-civil-penalty-dockets-decisions` - **Conferences:** 2 rows; 2004-07-06 through 2008-05-01; source ID `msha-conferences` - **Contested Violations:** 16 rows; 2010-06-22 through 2020-07-07; source ID `msha-contested-violations` - **Contractor Employment and Production — Quarterly:** 1,089 rows; unknown through unknown; source ID `msha-contractor-production-quarterly` - **Contractor Employment and Production — Yearly:** 235 rows; unknown through unknown; source ID `msha-contractor-production-yearly` - **Controller and Operator History:** 5 rows; 1950-01-01 through 2004-01-01; source ID `msha-controller-operator-history` - **Inspections:** 68 rows; 2000-06-27 through 2026-06-08; source ID `msha-inspections` - **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly` - **Mine Employment and Production — Yearly:** 47 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:** 26 rows; 2001-03-21 through 2025-07-16; source ID `msha-personal-health-samples` - **Violations:** 130 rows; 2000-06-27 through 2026-06-09; 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/enon-sand-gravel-3301466` - JSON: `/api/v1/mines/enon-sand-gravel-3301466` - Silica records, units, sample status and quarterly means: `/api/v1/mines/3301466/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows) - Relationship JSON: `/api/v1/mines/3301466/relationships` - MCP resource: `mine://3301466/assessment` - Complete Title 30 corpus: `/data/title30-sections.json`