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KASSON SAND & GRAVEL Metal/Non-Metal

Rieth-Riley Construction Co., Inc. · Surface

Controlled by RR Holdco, Inc.

MAPLE CITY, Leelanau County, MI · Intermittent

MSHA Mine ID: 2000811

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Fatalities: 0
Total incidents: 1
Years on record: 2019
Latest incident: Nov 2019

Compliance record

MSHA citations since 2000

citations

significant & substantial

$7,177

proposed penalties

$7,177

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Citations	Per 1M hrs
2025 Q4	7,270	0	0.0
2025 Q3	8,836	2	226.3
2025 Q2	8,158	0	0.0
2025 Q1	1,121	0	0.0
2024 Q4	5,131	0	0.0
2024 Q3	7,744	0	0.0
2024 Q2	8,076	0	0.0
2024 Q1	1,497	0	0.0

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

1 on file

2019 · 1 incident

November 6, 2019 MI · Metal/Non-Metal master mechanic, foreman, supervisor HANDTOOLS (NONPOWERED)

Rieth-Riley Construction Co., Inc. · Caught in, under or between a moving and a stationary object

EE was using a sledgehammer to clear a chute. When they struck the metal with the sledgehammer, their little finger was caught between the handle and the metal, causing a fracture.