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
Operator: Milestone Materials Div/Mathy Construction Co
Controller: Mathy Construction Company
Location: Onalaska, Monroe County, WI
Employees: 8
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
Related Mines
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.