Key Takeaway

Plant #32 is a active surface mine producing Stone, located in Onalaska, Monroe County, WI. It has 20 violations on record (3 S&S) and $2K in proposed penalties. Operated by Milestone Materials Div/Mathy Construction Co.

Plant #32

Active Surface Stone

Operator: Milestone Materials Div/Mathy Construction Co

Controller: Mathy Construction Company

Location: Onalaska, Monroe County, WI

Employees: 8

20
Violations
3
S&S Violations
13
Accidents
$2K
Penalties

Recent Violations

View all 20 →
Date Section S&S Negligence Penalty
09/09/2025 56.12018 Non-S&S ModNegligence $151
09/09/2025 56.12008 Non-S&S ModNegligence $151
09/09/2025 56.14107(a) Non-S&S LowNegligence $151
09/09/2025 56.14101(a)(2) Non-S&S HighNegligence $151
08/30/2017 56.9317 S&S ModNegligence $420
11/13/2013 56.14112(a)(1) Non-S&S ModNegligence $100
10/05/2011 56.12004 Non-S&S ModNegligence $100
04/07/2009 46.6(a) Non-S&S LowNegligence $112
04/07/2009 46.3(a) Non-S&S LowNegligence $100
04/07/2009 46.6(a) S&S LowNegligence $121
04/07/2009 46.3(a) Non-S&S LowNegligence $100
07/17/2007 56.12006 Non-S&S ModNegligence $100
07/17/2007 56.14107(a) Non-S&S ModNegligence $100
07/17/2007 56.14107(a) Non-S&S ModNegligence $100
12/02/2002 56.14112(b) Non-S&S ModNegligence $55
12/02/2002 56.14107(a) S&S LowNegligence $113
12/04/2001 56.14107(a) Non-S&S ModNegligence $55
12/04/2001 56.12004 Non-S&S ModNegligence $55
12/04/2001 56.14107(a) Non-S&S ModNegligence $55
12/04/2001 56.14107(a) Non-S&S ModNegligence $55

Accidents & Injuries

View all 13 →
Date Classification Injury Days Lost
02/25/2021 HANDTOOLS (NONPOWERED) DYS AWY FRM WRK & RESTRCTD ACT 21d lost, 60d restricted
06/03/2016 HANDLING OF MATERIALS DAYS AWAY FROM WORK ONLY 5d lost
10/29/2015 HANDTOOLS (NONPOWERED) DYS AWY FRM WRK & RESTRCTD ACT 2d lost, 19d restricted
09/25/2010 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
08/11/2006 OTHER NO DYS AWY FRM WRK,NO RSTR ACT None
06/14/2006 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
10/27/2004 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
06/17/2004 HANDTOOLS (NONPOWERED) DAYS AWAY FROM WORK ONLY 11d lost
12/06/2002 POWERED HAULAGE DAYS AWAY FROM WORK ONLY 48d lost
02/11/2002 POWERED HAULAGE DYS AWY FRM WRK & RESTRCTD ACT 6d lost, 10d restricted

Inspections

View all 35 →
Begin End Hours Inspectors
11/19/2025 11/20/2025 11.25 1
09/09/2025 09/09/2025 14.25 1
03/10/2025 03/11/2025 11.50 2
02/12/2024 02/13/2024 11.50 1
10/17/2023 10/18/2023 9.75 1
05/31/2023 05/31/2023 7.50 1
11/18/2021 11/18/2021 9.50 1
08/03/2021 08/03/2021 2.00 1
03/18/2020 03/19/2020 10.00 1
10/15/2018 10/17/2018 23.00 1

Mine Details

MSHA Mine ID4702405
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees8
Days/Week5.0
Hours/Shift8.0
Coordinates43.8963890, -91.2250000
Nearest TownOnalaska

Frequently Asked Questions

How many MSHA violations does Plant #32 have?

Plant #32 has 20 MSHA violations on record, of which 3 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $2K.

What type of mine is Plant #32?

Plant #32 is a Surface mine producing Stone, located in Onalaska, Monroe County, WI. It currently has 8 employees.

Has anyone been injured or killed at Plant #32?

According to MSHA records, Plant #32 has 13 reported accident/injury records and 0 fatalities on file.

Who operates Plant #32?

Plant #32 is operated by Milestone Materials Div/Mathy Construction Co and controlled by Mathy Construction Company. MSHA Mine ID: 4702405.