Round Lake Sand and Gravel West Plt Metal/Non-Metal

Gerken Materials Inc. · Surface

Controlled by Brent Gerken; Michael J Gerken

Brooklyn, Lenawee County, MI · Active

MSHA Mine ID: 2003447

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Compliance record

MSHA citations since 2011

citations

significant & substantial

$2,989

proposed penalties

$2,838

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	4,491	0	0.0
2025 Q3	4,969	0	0.0
2025 Q2	4,836	1	206.8
2025 Q1	3,555	0	0.0
2024 Q4	4,251	1	235.2
2024 Q3	4,385	0	0.0
2024 Q2	4,461	2	448.3
2024 Q1	3,839	2	521.0

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

No fatalities recorded at this mine.

1 on file

December 8, 2020 MI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON

Gerken Materials Inc. · Over-exertion (Not Elsewhere Classified)

Employee was climbing down steps of front end loader and stepped to ground and twisted EE's ankle.