Mining Incidents

PLANT #90 Metal/Non-Metal

Merrillan, WI, Clark County, WI  ·  Active
MSHA Mine ID: 4703040

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Fatalities
0
Total incidents
11
Years on record
2000–2026
Latest incident
May 2026
Compliance record
MSHA citations since 2002
14
citations
2
significant & substantial
$1,774
proposed penalties
$1,679
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 S&S Per 1M hrs
2025 Q4 2,494 0 0 0.0
2025 Q3 0 0 0
2025 Q2 6,233 0 0 0.0
2025 Q1 0 0 0
2024 Q3 4,406 0 0 0.0
2024 Q1 0 0 0
2023 Q4 5,092 0 0 0.0
2023 Q3 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

11 on file

2026 · 1 incident

2025 · 1 incident

2023 · 1 incident

2021 · 1 incident

January 18, 2021 WI · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
Milestone Materials Division Mathy Construction · Fall to the walkway or working surface

Employee was walking around truck when left foot broke through the ice. Employee's right foot slipped on the ice and employee fell to the ground breaking lower leg.

2016 · 1 incident

2015 · 1 incident

April 7, 2015 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Milestone Materials Division Mathy Construction · Struck against stationary object

Pushing air to air line back onto pipe, bracing against battery box of loader with side of body. Pushed hard enough against battery box to crack a rib.

2014 · 1 incident

2013 · 1 incident

2005 · 1 incident

May 11, 2005 WI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Milestone Materials Division Mathy Construction · Struck against stationary object

As employee scraped the floor of the quarry with the loader, the bucket dug deep into the floor resulting in the loader stopping suddenly and he struck the windshield.

2004 · 1 incident

2000 · 1 incident