# Diamond Sand & Gravel

- **MSHA mine ID:** 2800949
- **Status:** Abandoned
- **Type / commodity:** Facility / Construction Sand and Gravel
- **Location:** Sussex, NJ
- **Operator:** Diamond Sand and Gravel Inc
- **Controller:** Frank J  Hunkele
- **Public source rows linked:** 323
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Frank J  Hunkele (0071191) → Diamond Sand and Gravel Inc (0084404) → Diamond Sand & Gravel (2800949)**

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

## Controller and operator valid-time history

- **Robert E  Baldwin → Baldwin Enterprises Inc:** 1979-01-01 through 2007-01-29; derived from co-tenure at mine 2800949; source `msha-controller-operator-history`.
- **Frank J  Hunkele  et al → Diamond Sand & Gravel:** 2007-01-30 through 2017-01-11; derived from co-tenure at mine 2800949; source `msha-controller-operator-history`.
- **Jane M.  Day → North Church Gravel, Inc.:** 2017-01-12 through 2007-10-18; derived from co-tenure at mine 2800949; source `msha-controller-operator-history`.
- **Anthony J  Dellechiaie → North Church Gravel, Inc.:** 2017-01-12 through 2019-03-20; derived from co-tenure at mine 2800949; source `msha-controller-operator-history`.
- **Frank J  Hunkele  et al → Diamond Sand and Gravel Inc:** 2019-03-21 through current/open; derived from co-tenure at mine 2800949; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- Interval anomalies: 1
- 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 2 historical accident/injury rows; 0 coded fatalities and 13 lost days across the published record.
2. **COMPLIANCE — 10 since 2021:** Violations and penalties 86 violation rows across the full record; 21 carry an S&S flag and $12,706 appears in current assessed amounts.
3. **HEALTH — 11 samples:** Occupational health samples 11 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 4K employee hours and 8 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 — 16 since 2021:** Inspections 53 inspection events and 557 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 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **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 56.23002 — Written safety program.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-T/section-56.23002
- **30 CFR 56.12004 — Electrical conductors.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **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 56.14112 — 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 56.18010 — 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 56.12016 — Work on electrically-powered equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12016
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2003-10-11 through 2005-05-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-06-09 through 2026-06-09; source ID `msha-addresses`
- **Assessed Violations:** 86 rows; 2001-08-08 through 2026-06-09; source ID `msha-assessed-violations`
- **Controller and Operator History:** 5 rows; 1979-01-01 through 2019-03-21; source ID `msha-controller-operator-history`
- **Inspections:** 53 rows; 2001-08-08 through 2026-06-09; 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:** 54 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:** 11 rows; 2009-10-29 through 2023-11-29; source ID `msha-personal-health-samples`
- **Violations:** 86 rows; 2001-08-08 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/diamond-sand-gravel-2800949`
- JSON: `/api/v1/mines/diamond-sand-gravel-2800949`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2800949/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2800949/relationships`
- MCP resource: `mine://2800949/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`