Key Takeaway
Portable #4 is a temporarily idled surface mine producing SandAndGravel, located in Billings, Yellowstone County, MT. It has 3 violations on record (0 S&S) and $445 in proposed penalties. Operated by Knife River Billings.
Portable #4
Operator: Knife River Billings
Controller: Knife River Corporation
Location: Billings, Yellowstone County, MT
Employees: 2
Recent Violations
View all 3 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/09/2025 | 56.12030 | Non-S&S | ModNegligence | $151 |
| 04/03/2024 | 56.12016 | Non-S&S | ModNegligence | $147 |
| 04/03/2024 | 56.4200(b)(1) | Non-S&S | LowNegligence | $147 |
Accidents & Injuries
View all 1 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 08/20/2020 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 7 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 06/09/2025 | 06/11/2025 | 16.50 | 2 |
| 04/02/2024 | 04/04/2024 | 16.25 | 1 |
| 03/20/2023 | 03/22/2023 | 13.25 | 1 |
| 11/15/2021 | 11/16/2021 | 11.25 | 1 |
| 07/18/2021 | 07/19/2021 | 14.75 | 2 |
| 03/05/2021 | 03/09/2021 | 9.25 | 1 |
| 07/01/2020 | 07/02/2020 | 19.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Portable #4 have?
Portable #4 has 3 MSHA violations on record, of which 0 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $445.
What type of mine is Portable #4?
Portable #4 is a Surface mine producing SandAndGravel, located in Billings, Yellowstone County, MT. It currently has 2 employees.
Has anyone been injured or killed at Portable #4?
According to MSHA records, Portable #4 has 1 reported accident/injury records and 0 fatalities on file.
Who operates Portable #4?
Portable #4 is operated by Knife River Billings and controlled by Knife River Corporation. MSHA Mine ID: 2402047.