Key Takeaway
Denniston Quarry is a active surface mine producing Stone, located in Monroe, Monroe County, MI. It has 40 violations on record (4 S&S) and $5K in proposed penalties. Operated by Michigan Materials and Aggregates Company.
Denniston Quarry
Operator: Michigan Materials and Aggregates Company
Controller: CRH PLC
Location: Monroe, Monroe County, MI
Employees: 27
Recent Violations
View all 40 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 08/12/2025 | 56.12068 | Non-S&S | LowNegligence | $151 |
| 05/08/2024 | 56.14107(a) | Non-S&S | LowNegligence | $147 |
| 05/08/2024 | 50.30(a) | Non-S&S | LowNegligence | $147 |
| 02/27/2024 | 56.11001 | Non-S&S | LowNegligence | $147 |
| 06/15/2022 | 56.16006 | Non-S&S | ModNegligence | $133 |
| 06/15/2022 | 56.14101(a)(3) | Non-S&S | ModNegligence | $133 |
| 11/03/2020 | 56.14132(b)(1) | Non-S&S | LowNegligence | $123 |
| 09/05/2018 | 56.9300(b) | Non-S&S | ModNegligence | $118 |
| 09/05/2018 | 46.3(b) | Non-S&S | ModNegligence | $118 |
| 02/12/2018 | 56.16005 | Non-S&S | ModNegligence | $118 |
| 08/02/2017 | 56.12002 | Non-S&S | ModNegligence | $116 |
| 08/02/2017 | 56.20003(a) | Non-S&S | ModNegligence | $116 |
| 08/02/2017 | 56.14130(c) | Non-S&S | ModNegligence | $116 |
| 08/02/2017 | 56.20010 | Non-S&S | LowNegligence | $148 |
| 08/01/2017 | 58.620 | S&S | ModNegligence | $173 |
| 03/23/2017 | 56.12047 | Non-S&S | ModNegligence | $148 |
| 03/22/2017 | 56.9300(a) | Non-S&S | ModNegligence | $116 |
| 05/02/2016 | 56.4201(a)(2) | Non-S&S | ModNegligence | $100 |
| 04/27/2016 | 56.4101 | Non-S&S | ModNegligence | $100 |
| 04/26/2016 | 56.9300(a) | S&S | ModNegligence | $162 |
Accidents & Injuries
View all 9 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 03/18/2015 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 07/30/2014 | OTHER | INJURIES INVOLVNG NONEMPLOYEES | None |
| 07/03/2007 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 17d lost |
| 10/13/2004 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/07/2004 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 02/26/2004 | MACHINERY | DAYS RESTRICTED ACTIVITY ONLY | 2d restricted |
| 10/06/2003 | NO VALUE FOUND | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 08/13/2003 | HANDTOOLS (NONPOWERED) | DAYS RESTRICTED ACTIVITY ONLY | 2d restricted |
| 10/04/2000 | OTHER | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 51 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 02/12/2026 | 02/12/2026 | 11.50 | 1 |
| 08/11/2025 | 08/12/2025 | 16.25 | 1 |
| 03/05/2025 | 03/06/2025 | 11.50 | 1 |
| 01/23/2025 | 01/23/2025 | 3.50 | 1 |
| 05/08/2024 | 05/09/2024 | 32.25 | 1 |
| 02/26/2024 | 02/28/2024 | 26.50 | 1 |
| 08/09/2023 | 08/09/2023 | 11.25 | 1 |
| 03/01/2023 | 03/02/2023 | 15.00 | 1 |
| 06/15/2022 | 06/15/2022 | 9.50 | 1 |
| 03/09/2022 | 03/09/2022 | 5.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Denniston Quarry have?
Denniston Quarry has 40 MSHA violations on record, of which 4 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $5K.
What type of mine is Denniston Quarry?
Denniston Quarry is a Surface mine producing Stone, located in Monroe, Monroe County, MI. It currently has 27 employees.
Has anyone been injured or killed at Denniston Quarry?
According to MSHA records, Denniston Quarry has 9 reported accident/injury records and 0 fatalities on file.
Who operates Denniston Quarry?
Denniston Quarry is operated by Michigan Materials and Aggregates Company and controlled by CRH PLC. MSHA Mine ID: 2002934.