Key Takeaway
IROCK Portable #1 is a active surface mine producing Stone, located in Milan, Shelby County, MO. It has 32 violations on record (7 S&S) and $7K in proposed penalties. Operated by Magruder Limestone Co.
IROCK Portable #1
Operator: Magruder Limestone Co
Controller: Mark Magruder
Location: Milan, Shelby County, MO
Employees: 4
Recent Violations
View all 32 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 09/17/2025 | 56.9300(a) | Non-S&S | ModNegligence | $151 |
| 03/06/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 01/08/2024 | 56.11003 | Non-S&S | ModNegligence | $147 |
| 07/26/2023 | 56.14207 | Non-S&S | ModNegligence | $143 |
| 07/26/2023 | 41.12 | Non-S&S | HighNegligence | $143 |
| 10/05/2021 | 56.14207 | Non-S&S | ModNegligence | $125 |
| 12/02/2020 | 56.4130(b) | Non-S&S | ModNegligence | $123 |
| 02/03/2020 | 56.14107(a) | Non-S&S | ModNegligence | $123 |
| 06/04/2019 | 56.12034 | Non-S&S | HighNegligence | $121 |
| 06/03/2019 | 56.14112(b) | Non-S&S | LowNegligence | $121 |
| 03/07/2019 | 56.14107(a) | Non-S&S | LowNegligence | $121 |
| 03/07/2019 | 56.11012 | Non-S&S | LowNegligence | $121 |
| 06/20/2018 | 56.11001 | Non-S&S | ModNegligence | $118 |
| 06/20/2018 | 56.4102 | Non-S&S | ModNegligence | $118 |
| 06/20/2018 | 56.12028 | Non-S&S | ModNegligence | $336 |
| 06/20/2018 | 56.4101 | Non-S&S | ModNegligence | $118 |
| 10/10/2017 | 56.9300(a) | S&S | ModNegligence | $116 |
| 10/10/2017 | 56.14101(a)(2) | S&S | ModNegligence | $356 |
| 10/10/2017 | 56.14101(a)(2) | S&S | ModNegligence | $356 |
| 05/25/2017 | 56.12004 | Non-S&S | ModNegligence | $116 |
Accidents & Injuries
View all 3 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 12/05/2024 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 138d lost |
| 03/13/2023 | SLIP OR FALL OF PERSON | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 10/06/2017 | POWERED HAULAGE | DYS AWY FRM WRK & RESTRCTD ACT | 14d lost, 54d restricted |
Inspections
View all 29 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 09/17/2025 | 09/17/2025 | 10.50 | 1 |
| 03/10/2025 | 03/10/2025 | 6.00 | 1 |
| 03/05/2025 | 03/06/2025 | 12.50 | 1 |
| 06/26/2024 | 06/27/2024 | 3.00 | 1 |
| 06/26/2024 | 06/27/2024 | 7.00 | 1 |
| 01/08/2024 | 01/10/2024 | 32.00 | 1 |
| 07/24/2023 | 08/01/2023 | 26.00 | 1 |
| 03/07/2023 | 03/08/2023 | 8.00 | 1 |
| 09/01/2022 | 09/01/2022 | 9.00 | 1 |
| 10/05/2021 | 10/12/2021 | 21.25 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does IROCK Portable #1 have?
IROCK Portable #1 has 32 MSHA violations on record, of which 7 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $7K.
What type of mine is IROCK Portable #1?
IROCK Portable #1 is a Surface mine producing Stone, located in Milan, Shelby County, MO. It currently has 4 employees.
Has anyone been injured or killed at IROCK Portable #1?
According to MSHA records, IROCK Portable #1 has 3 reported accident/injury records and 0 fatalities on file.
Who operates IROCK Portable #1?
IROCK Portable #1 is operated by Magruder Limestone Co and controlled by Mark Magruder. MSHA Mine ID: 2302495.