# SUMMIT SAND & GRAVEL

- **MSHA mine ID:** 3901477
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Roberts, SD
- **Operator:** L. G. Everist, Inc.
- **Controller:** L G Everist Inc
- **Public source rows linked:** 381
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**L G Everist Inc (M00038) → L. G. Everist, Inc. (L00088) → SUMMIT SAND & GRAVEL (3901477)**

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

## Controller and operator valid-time history

- **L G Everist Inc → L. G. Everist, Inc.:** 2002-12-23 through current/open; derived from co-tenure at mine 3901477; 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 — 4 since 2021:** Accidents and injuries 9 historical accident/injury rows; 0 coded fatalities and 22 lost days across the published record.
2. **COMPLIANCE — 8 since 2021:** Violations and penalties 92 violation rows across the full record; 17 carry an S&S flag and $11,155 appears in current assessed amounts.
3. **HEALTH — 14 samples:** Occupational health samples 12 personal; 2 area. 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
5. **LEGAL — 69 linked rows:** Contests, conferences and decisions 26 contested-violation rows, 26 civil-penalty docket/decision rows, and 17 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 — 13 since 2021:** Inspections 54 inspection events and 953 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 56.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.16003 — Storage of hazardous materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16003
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101

## Source coverage

- **Accident, Injuries, and Illnesses:** 9 rows; 2016-03-04 through 2026-09-10; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2023-05-01 through 2023-05-01; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 2 rows; 2014-08-04 through 2014-08-04; source ID `msha-area-samples`
- **Assessed Violations:** 92 rows; 2004-05-04 through 2025-06-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 26 rows; 2009-10-27 through 2018-10-03; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 17 rows; 2004-05-26 through 2018-03-12; source ID `msha-conferences`
- **Contested Violations:** 26 rows; 2006-10-18 through 2018-02-15; source ID `msha-contested-violations`
- **Controller and Operator History:** 1 rows; 2002-12-23 through 2002-12-23; source ID `msha-controller-operator-history`
- **Inspections:** 54 rows; 2003-09-25 through 2026-08-12; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 48 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:** 12 rows; 2006-05-24 through 2025-09-03; source ID `msha-personal-health-samples`
- **Violations:** 92 rows; 2004-05-04 through 2025-06-24; 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/summit-sand-gravel-3901477`
- JSON: `/api/v1/mines/summit-sand-gravel-3901477`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3901477/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3901477/relationships`
- MCP resource: `mine://3901477/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`