Key Takeaway

Ottawa Lake Quarry is a intermittent surface mine producing Stone, located in Owatta Lake, Monroe County, MI. It has 43 violations on record (6 S&S) and $12K in proposed penalties. Operated by Michigan Materials and Aggregates Co.

Ottawa Lake Quarry

Intermittent Surface Stone

Operator: Michigan Materials and Aggregates Co

Controller: CRH PLC

Location: Owatta Lake, Monroe County, MI

Employees: 32

43
Violations
6
S&S Violations
19
Accidents
$12K
Penalties

Recent Violations

View all 43 →
Date Section S&S Negligence Penalty
08/08/2025 56.12004 Non-S&S LowNegligence $151
10/12/2023 56.14112(b) Non-S&S ModNegligence $143
10/12/2023 56.20003(a) Non-S&S ModNegligence $143
10/11/2023 56.14207 Non-S&S LowNegligence $143
02/28/2023 50.30(a) Non-S&S LowNegligence $143
06/15/2022 56.12032 Non-S&S ModNegligence $133
06/03/2021 56.14107(a) Non-S&S ModNegligence $125
06/03/2021 56.15014 Non-S&S ModNegligence $125
08/25/2020 56.14132(a) Non-S&S ModNegligence $185
08/25/2020 56.14100(c) Non-S&S ModNegligence $123
07/01/2020 50.20-1 Non-S&S LowNegligence $123
11/05/2019 62.120 Non-S&S ModNegligence $121
11/05/2019 62.130(a) Non-S&S ModNegligence $121
11/04/2019 56.4201(a)(2) Non-S&S ModNegligence $121
11/04/2019 56.4201(a)(2) Non-S&S ModNegligence $121
09/11/2018 56.3200 Non-S&S ModNegligence $177
01/05/2016 46.8(a)(2) Non-S&S ModNegligence $112
01/05/2016 56.14107(a) Non-S&S ModNegligence $243
01/05/2016 56.14130(c) Non-S&S LowNegligence $100
01/04/2016 56.14100(c) S&S ModNegligence $162

Accidents & Injuries

View all 19 →
Date Classification Injury Days Lost
08/21/2025 POWERED HAULAGE DAYS RESTRICTED ACTIVITY ONLY 5d restricted
08/05/2024 HANDTOOLS (NONPOWERED) NO DYS AWY FRM WRK,NO RSTR ACT None
04/25/2017 POWERED HAULAGE NO DYS AWY FRM WRK,NO RSTR ACT None
08/23/2016 POWERED HAULAGE NO DYS AWY FRM WRK,NO RSTR ACT None
07/10/2016 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
11/27/2013 MACHINERY DAYS RESTRICTED ACTIVITY ONLY 40d restricted
10/08/2013 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
10/25/2008 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
08/03/2006 HANDLING OF MATERIALS NO DYS AWY FRM WRK,NO RSTR ACT None
05/26/2006 SLIP OR FALL OF PERSON NO DYS AWY FRM WRK,NO RSTR ACT None

Inspections

View all 54 →
Begin End Hours Inspectors
08/07/2025 08/08/2025 25.25 1
10/11/2023 10/13/2023 26.25 1
08/31/2023 09/01/2023 18.50 1
02/27/2023 02/28/2023 19.75 1
06/15/2022 06/15/2022 12.50 1
12/08/2021 12/09/2021 15.00 1
06/01/2021 06/03/2021 26.75 1
03/02/2021 03/03/2021 26.00 1
08/24/2020 08/31/2020 27.25 1
06/29/2020 07/02/2020 6.25 1

Mine Details

MSHA Mine ID2000041
Mine TypeSurface
StatusIntermittent
CommodityStone
SIC DescriptionCrushed, Broken Limestone NEC
Employees32
Days/Week6.0
Hours/Shift8.0
Coordinates41.7508330, -83.6661110
Nearest TownOwatta Lake

Frequently Asked Questions

How many MSHA violations does Ottawa Lake Quarry have?

Ottawa Lake Quarry has 43 MSHA violations on record, of which 6 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $12K.

What type of mine is Ottawa Lake Quarry?

Ottawa Lake Quarry is a Surface mine producing Stone, located in Owatta Lake, Monroe County, MI. It currently has 32 employees.

Has anyone been injured or killed at Ottawa Lake Quarry?

According to MSHA records, Ottawa Lake Quarry has 19 reported accident/injury records and 1 fatalities on file.

Who operates Ottawa Lake Quarry?

Ottawa Lake Quarry is operated by Michigan Materials and Aggregates Co and controlled by CRH PLC. MSHA Mine ID: 2000041.