Key Takeaway
Portable Screen Plant is a intermittent surface mine producing SandAndGravel, located in St. Ignace, MI, Mackinac County, MI. It has 12 violations on record (1 S&S) and $2K in proposed penalties. Operated by Con Agg Inc.
Portable Screen Plant
Operator: Con Agg Inc
Controller: Kenneth W Norris
Location: St. Ignace, MI, Mackinac County, MI
Employees: 3
Recent Violations
View all 12 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 11/19/2025 | 56.4101 | Non-S&S | LowNegligence | $151 |
| 05/19/2021 | 56.1000 | Non-S&S | ModNegligence | $125 |
| 05/19/2021 | 56.4101 | Non-S&S | ModNegligence | $125 |
| 05/31/2017 | 56.20011 | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 56.11012 | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 56.4102 | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 56.14132(a) | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 56.14101(a)(2) | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 56.14100(b) | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 56.14130(e)(2) | S&S | ModNegligence | $280 |
| 05/31/2017 | 56.14100(b) | Non-S&S | ModNegligence | $116 |
| 05/31/2017 | 46.5(b)(5) | Non-S&S | ModNegligence | $129 |
Inspections
View all 12 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/19/2025 | 11/19/2025 | 12.75 | 1 |
| 06/24/2025 | 06/24/2025 | 4.00 | 1 |
| 05/01/2024 | 05/03/2024 | 13.00 | 1 |
| 06/13/2023 | 06/13/2023 | 11.00 | 1 |
| 07/07/2022 | 07/07/2022 | 1.25 | 1 |
| 05/19/2021 | 05/19/2021 | 5.25 | 1 |
| 08/19/2020 | 08/19/2020 | 2.00 | 1 |
| 09/18/2019 | 09/18/2019 | 16.50 | 1 |
| 06/18/2019 | 06/18/2019 | 2.50 | 1 |
| 06/12/2018 | 06/12/2018 | 2.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Portable Screen Plant have?
Portable Screen Plant has 12 MSHA violations on record, of which 1 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $2K.
What type of mine is Portable Screen Plant?
Portable Screen Plant is a Surface mine producing SandAndGravel, located in St. Ignace, MI, Mackinac County, MI. It currently has 3 employees.
Has anyone been injured or killed at Portable Screen Plant?
According to MSHA records, Portable Screen Plant has 0 reported accident/injury records and 0 fatalities on file.
Who operates Portable Screen Plant?
Portable Screen Plant is operated by Con Agg Inc and controlled by Kenneth W Norris. MSHA Mine ID: 2003514.