Mining Incidents

Plant #88 Metal/Non-Metal

Onalaska, Dunn County, WI  ·  Intermittent
MSHA Mine ID: 4703080

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Fatalities
0
Total incidents
5
Years on record
2000–2014
Latest incident
Sep 2014
Compliance record
MSHA citations since 2003
10
citations
1
significant & substantial
$826
proposed penalties
$826
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 605 0 0 0.0
2025 Q3 0 0 0
2025 Q2 1,681 0 0 0.0
2025 Q1 0 0 0
2024 Q4 1,251 0 0 0.0
2024 Q3 2,264 0 0 0.0
2024 Q1 0 0 0
2023 Q4 794 0 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

5 on file

2014 · 1 incident

September 10, 2014 WI · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Milestone Materials Division Mathy Construction · Struck by... (Not Elsewhere Classified)

Operator was cutting open a tube of silicone with a utility knife, knife slipped and cut his leg. Took 6 stitches to close the wound.

2004 · 1 incident

November 18, 2004 WI · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
Milestone Materials Division Mathy Construction · Struck against a moving object

During normal haul truck operation employee experienced upper back strain. The cause is undetermined.

2002 · 1 incident

September 24, 2002 WI · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Milestone Materials Division Mathy Construction · Over-exertion (Not Elsewhere Classified)

WHILE EXTENDING THE LENGTH AND HOLDING THE DISCHARGE PIPE, WHILE ANOTHER EE BANDED IT. THAT EVENING EE FELT PAIN IN HIS LEFT SIDE. HE SOUGHT MEDICAL TREATMENT ON 9-26-02.

2001 · 1 incident

August 22, 2001 WI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Milestone Materials Division Mathy Construction · Struck by... (Not Elsewhere Classified)

WHILE CUTTING BELTING FOR A CONVEYOR-UTILITY KNIFE SLIPPED AND CUT EE'S LEG REQUIRING MEDICAL SERVICES.

2000 · 1 incident