Key Takeaway

Plant #30 is a active surface mine producing Stone, located in Onalaska, La Crosse County, WI. It has 25 violations on record (6 S&S) and $5K in proposed penalties. Operated by Milestone Materials Div/Mathy Construction Co.

Plant #30

Active Surface Stone

Operator: Milestone Materials Div/Mathy Construction Co

Controller: Mathy Construction Company

Location: Onalaska, La Crosse County, WI

Employees: 3

25
Violations
6
S&S Violations
4
Accidents
$5K
Penalties

Recent Violations

View all 25 →
Date Section S&S Negligence Penalty
07/23/2025 56.12004 S&S ModNegligence $642
07/23/2025 56.14107(a) Non-S&S ModNegligence $151
10/02/2023 56.14132(a) Non-S&S LowNegligence $143
10/16/2019 56.12018 Non-S&S ModNegligence $121
02/27/2019 56.11016 Non-S&S LowNegligence $121
10/23/2017 56.12004 Non-S&S ModNegligence $116
03/24/2016 56.12018 Non-S&S ModNegligence $100
03/23/2016 56.14109 Non-S&S ModNegligence $100
03/23/2016 56.14107(a) Non-S&S ModNegligence $100
11/05/2013 56.14107(a) Non-S&S LowNegligence $100
03/30/2010 56.12008 Non-S&S LowNegligence $100
03/05/2008 56.14109(a) Non-S&S ModNegligence $100
03/05/2008 56.12008 Non-S&S ModNegligence $100
03/05/2008 56.14201(b) Non-S&S ModNegligence $100
03/05/2008 56.14105 S&S ModNegligence $1,052
03/05/2008 56.15005 S&S ModNegligence $1,052
03/05/2008 Non-S&S $0
10/24/2007 56.14112(b) Non-S&S ModNegligence $100
03/08/2007 56.9314 S&S ModNegligence $247
04/06/2005 56.3131 S&S ModNegligence $177

Accidents & Injuries

View all 4 →
Date Classification Injury Days Lost
05/25/2012 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
09/13/2001 POWERED HAULAGE DAYS AWAY FROM WORK ONLY 1d lost
09/12/2001 SLIP OR FALL OF PERSON DYS AWY FRM WRK & RESTRCTD ACT 5d lost, 2d restricted
07/07/2000 POWERED HAULAGE NO DYS AWY FRM WRK,NO RSTR ACT None

Inspections

View all 42 →
Begin End Hours Inspectors
02/03/2026 02/04/2026 8.25 1
07/23/2025 07/24/2025 8.50 1
07/14/2025 07/15/2025 3.00 1
02/03/2025 02/03/2025 11.75 1
02/14/2024 02/14/2024 4.00 1
10/02/2023 10/02/2023 12.00 1
07/17/2023 07/17/2023 0.50 1
05/19/2022 05/19/2022 6.50 1
11/23/2021 11/23/2021 2.75 1
04/05/2021 04/05/2021 2.50 1

Mine Details

MSHA Mine ID4702873
Mine TypeSurface
StatusActive
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees3
Days/Week5.0
Hours/Shift12.0
Coordinates43.8963890, -91.2250000
Nearest TownOnalaska

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Frequently Asked Questions

How many MSHA violations does Plant #30 have?

Plant #30 has 25 MSHA violations on record, of which 6 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $5K.

What type of mine is Plant #30?

Plant #30 is a Surface mine producing Stone, located in Onalaska, La Crosse County, WI. It currently has 3 employees.

Has anyone been injured or killed at Plant #30?

According to MSHA records, Plant #30 has 4 reported accident/injury records and 0 fatalities on file.

Who operates Plant #30?

Plant #30 is operated by Milestone Materials Div/Mathy Construction Co and controlled by Mathy Construction Company. MSHA Mine ID: 4702873.