Plant #57 Metal/Non-Metal

Milestone Materials Div/Mathy Construction Co · Surface

Controlled by Mathy Construction Company

Onalaska, La Crosse County, WI · Intermittent

MSHA Mine ID: 4703212

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Compliance record

MSHA citations since 2001

citations

significant & substantial

$1,589

proposed penalties

$1,589

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Per 1M hrs
2025 Q4	487	0.0
2025 Q3	0
2025 Q2	1,729	0.0
2024 Q4	511	0.0
2024 Q3	0
2024 Q2	0
2024 Q1	0
2023 Q2	2,009	0.0

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

No fatalities recorded at this mine.

1 on file

March 24, 2000 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE

WHILE OPERATING FRONT END LOADER STOCKPILING, HIS LOADER TIRE (FRONT) HIT UP ON THE SAND PILE CAUSING HIM TO TWIST IN THE SEAT, WRENCHING HIS BACK.