# KASSON SAND & GRAVEL

- **MSHA mine ID:** 2000811
- **Status:** Intermittent
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Leelanau, MI
- **Operator:** Rieth-Riley Construction Co., Inc.
- **Controller:** RR Holdco, Inc.
- **Public source rows linked:** 549
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**RR Holdco, Inc. (0180601) → Rieth-Riley Construction Co., Inc. (L01209) → KASSON SAND & GRAVEL (2000811)**

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

## Controller and operator valid-time history

- **M Logan Wysong Company → Peninsula Asphalt Corp:** 1950-01-01 through 1983-02-24; derived from co-tenure at mine 2000811; source `msha-controller-operator-history`.
- **Robert W  Noonan et al → Kasson Sand & Gravel Company:** 1983-02-25 through 2016-06-30; derived from co-tenure at mine 2000811; source `msha-controller-operator-history`.
- **Rieth-Riley Construction Company Inc → Rieth-Riley Construction Co., Inc.:** 2016-07-01 through 2025-01-30; derived from co-tenure at mine 2000811; source `msha-controller-operator-history`.
- **RR Holdco, Inc. → Rieth-Riley Construction Co., Inc.:** 2025-01-31 through current/open; derived from co-tenure at mine 2000811; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 5 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 72 violation rows across the full record; 8 carry an S&S flag and $7,177 appears in current assessed amounts.
3. **HEALTH — 20 samples:** Occupational health samples 20 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 8K employee hours and 14 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 7 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 7 since 2021:** Inspections 40 inspection events and 793 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 56.14109 — 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 56.12041 — Design of switches and starting boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12041
- **30 CFR 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **30 CFR 56.12004 — Electrical conductors.** (6 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **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 56.12018 — 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 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2019-11-06 through 2019-11-06; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1977-08-17 through 1977-08-17; source ID `msha-addresses`
- **Assessed Violations:** 72 rows; 2000-03-28 through 2025-07-18; source ID `msha-assessed-violations`
- **Conferences:** 7 rows; 2016-12-14 through 2022-09-22; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 55 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 11 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 2016-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 40 rows; 2000-03-28 through 2026-06-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 211 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:** 20 rows; 2003-04-30 through 2026-06-16; source ID `msha-personal-health-samples`
- **Violations:** 72 rows; 2000-03-28 through 2025-07-18; 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/kasson-sand-gravel-2000811`
- JSON: `/api/v1/mines/kasson-sand-gravel-2000811`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2000811/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2000811/relationships`
- MCP resource: `mine://2000811/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`