Key Takeaway
Mobile Crusher #1 is a intermittent surface mine producing Stone, located in Riddle, Douglas County, OR. It has 41 violations on record (9 S&S) and $5K in proposed penalties. Operated by Knife River Materials.
Mobile Crusher #1
Operator: Knife River Materials
Controller: Knife River Corporation
Location: Riddle, Douglas County, OR
Employees: 4
Recent Violations
View all 41 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 12/15/2022 | 56.4101 | Non-S&S | ModNegligence | $143 |
| 07/21/2021 | 56.12004 | Non-S&S | ModNegligence | $125 |
| 12/15/2020 | 56.12002 | Non-S&S | ModNegligence | $125 |
| 12/15/2020 | 56.12002 | Non-S&S | ModNegligence | $125 |
| 05/27/2020 | 56.11001 | Non-S&S | ModNegligence | $123 |
| 05/27/2020 | 56.16005 | Non-S&S | ModNegligence | $123 |
| 05/27/2020 | 56.12028 | Non-S&S | ModNegligence | $123 |
| 05/27/2020 | 56.4101 | Non-S&S | ModNegligence | $123 |
| 04/11/2018 | 56.14107(a) | Non-S&S | LowNegligence | $118 |
| 04/11/2018 | 56.12028 | Non-S&S | LowNegligence | $118 |
| 05/05/2017 | 56.4201(a)(2) | Non-S&S | LowNegligence | $116 |
| 02/01/2017 | 56.14100(c) | Non-S&S | LowNegligence | $116 |
| 02/01/2017 | 56.14107(a) | S&S | ModNegligence | $204 |
| 04/24/2013 | 41.12 | Non-S&S | ModNegligence | $100 |
| 08/02/2012 | 56.1000 | Non-S&S | LowNegligence | $100 |
| 03/15/2011 | 56.16006 | Non-S&S | ModNegligence | $100 |
| 09/24/2009 | 56.12023 | Non-S&S | LowNegligence | $100 |
| 09/24/2009 | 56.14112(a)(1) | Non-S&S | LowNegligence | $100 |
| 09/24/2009 | 56.12004 | Non-S&S | LowNegligence | $100 |
| 09/24/2009 | 56.14107(a) | Non-S&S | ModNegligence | $176 |
Accidents & Injuries
View all 1 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 09/10/2001 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 48 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 09/23/2025 | 09/24/2025 | 16.25 | 1 |
| 08/19/2025 | 08/19/2025 | 1.00 | 1 |
| 06/16/2025 | 06/17/2025 | 17.75 | 1 |
| 12/07/2023 | 12/07/2023 | 5.50 | 1 |
| 09/07/2023 | 09/08/2023 | 12.75 | 1 |
| 12/14/2022 | 12/16/2022 | 11.00 | 1 |
| 08/28/2022 | 09/01/2022 | 21.00 | 1 |
| 01/12/2022 | 01/13/2022 | 9.00 | 1 |
| 07/21/2021 | 07/21/2021 | 15.50 | 1 |
| 12/14/2020 | 12/15/2020 | 17.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Mobile Crusher #1 have?
Mobile Crusher #1 has 41 MSHA violations on record, of which 9 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $5K.
What type of mine is Mobile Crusher #1?
Mobile Crusher #1 is a Surface mine producing Stone, located in Riddle, Douglas County, OR. It currently has 4 employees.
Has anyone been injured or killed at Mobile Crusher #1?
According to MSHA records, Mobile Crusher #1 has 1 reported accident/injury records and 0 fatalities on file.
Who operates Mobile Crusher #1?
Mobile Crusher #1 is operated by Knife River Materials and controlled by Knife River Corporation. MSHA Mine ID: 3502906.