# Glass Sand & Gravel

- **MSHA mine ID:** 1504261
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Hart, KY
- **Operator:** Hinkle Contracting Company LLC
- **Controller:** CRH PLC
- **Public source rows linked:** 173
- **Source coverage:** 10 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**CRH PLC (M06183) → Hinkle Contracting Company LLC (L02333) → Glass Sand & Gravel (1504261)**

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

## Controller and operator valid-time history

- **W J  Crowe → Green River Sand & Gravel Company Inc:** 1950-01-01 through 1982-08-23; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **Robert L  James III → Southern Aggregates Inc:** 1982-08-24 through 1990-06-06; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **Larry T  Glass → Kentucky Aggregate-Division of Larry Glass Const:** 1990-06-07 through 2006-06-22; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **Summit Materials LLC → Glass Paving & Stone:** 2006-06-23 through 2008-06-15; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **Summit Materials LLC → Glass Aggregates LLC:** 2008-06-16 through 2021-01-07; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **Summit Materials LLC → Hinkle Contracting Company LLC:** 2021-01-08 through 2022-05-13; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **CRH PLC → Glass Paving & Stone:** 2022-05-14 through 2008-06-15; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.
- **CRH PLC → Hinkle Contracting Company LLC:** 2022-05-14 through current/open; derived from co-tenure at mine 1504261; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 20
- 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 1 historical accident/injury rows; 0 coded fatalities and 186 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 36 violation rows across the full record; 10 carry an S&S flag and $5,167 appears in current assessed amounts.
3. **HEALTH — 6 samples:** Occupational health samples 6 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 3K employee hours and 6 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 — 0 since 2021:** Inspections 36 inspection events and 410 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 56.14132 — 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 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.9100 — Traffic control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9100
- **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 56.9301 — Dump site restraints.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **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 56.14100 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2013-10-01 through 2013-10-01; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2020-03-30 through 2020-03-30; source ID `msha-addresses`
- **Assessed Violations:** 34 rows; 2000-05-24 through 2014-04-08; source ID `msha-assessed-violations`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2021-01-08; source ID `msha-controller-operator-history`
- **Inspections:** 36 rows; 2000-05-24 through 2017-10-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 22 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 28 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:** 6 rows; 2002-07-16 through 2009-07-15; source ID `msha-personal-health-samples`
- **Violations:** 36 rows; 2000-05-24 through 2014-04-08; 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/glass-sand-gravel-1504261`
- JSON: `/api/v1/mines/glass-sand-gravel-1504261`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1504261/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1504261/relationships`
- MCP resource: `mine://1504261/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`