Key Takeaway
Portable #1 is a temporarily idled surface mine producing SandAndGravel, located in Lovell, Big Horn County, WY. It has 91 violations on record (29 S&S) and $34K in proposed penalties. Operated by Mountain Construction Company.
Portable #1
Operator: Mountain Construction Company
Controller: D Michael Frost
Location: Lovell, Big Horn County, WY
Employees: 10
Recent Violations
View all 91 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 01/06/2026 | 56.12030 | Non-S&S | ModNegligence | $151 |
| 01/06/2026 | 56.12028 | Non-S&S | ModNegligence | $151 |
| 01/06/2026 | 56.12032 | S&S | HighNegligence | $398 |
| 08/14/2025 | 56.14100(b) | Non-S&S | LowNegligence | $151 |
| 08/14/2025 | 56.12030 | Non-S&S | ModNegligence | $151 |
| 08/14/2025 | 56.14100(b) | Non-S&S | ModNegligence | $151 |
| 08/14/2025 | 56.14132(a) | Non-S&S | LowNegligence | $151 |
| 03/06/2025 | 56.14107(a) | Non-S&S | LowNegligence | $151 |
| 03/06/2025 | 56.12025 | Non-S&S | ModNegligence | $151 |
| 03/12/2024 | 56.14207 | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.14107(a) | Non-S&S | ModNegligence | $147 |
| 03/12/2024 | 56.4104(a) | Non-S&S | ModNegligence | $147 |
| 08/14/2023 | 56.4104(a) | Non-S&S | ModNegligence | $143 |
| 03/10/2023 | 56.14107(a) | S&S | ModNegligence | $905 |
| 03/10/2023 | 56.14101(a)(2) | Non-S&S | ModNegligence | $182 |
| 08/10/2022 | 56.11027 | S&S | ModNegligence | $2,790 |
| 08/10/2022 | 56.14110 | S&S | ModNegligence | $2,790 |
| 08/10/2022 | 56.14107(a) | S&S | ModNegligence | $840 |
| 08/10/2022 | 56.4200(b)(2) | Non-S&S | ModNegligence | $169 |
| 08/10/2022 | 46.9(a) | Non-S&S | HighNegligence | $155 |
Accidents & Injuries
View all 2 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 04/07/2022 | HANDLING OF MATERIALS | DAYS AWAY FROM WORK ONLY | 3d lost |
| 01/22/2020 | SLIP OR FALL OF PERSON | DAYS AWAY FROM WORK ONLY | 67d lost |
Inspections
View all 39 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 01/06/2026 | 01/07/2026 | 7.25 | 1 |
| 08/14/2025 | 08/28/2025 | 16.75 | 2 |
| 03/04/2025 | 03/06/2025 | 12.00 | 1 |
| 03/12/2024 | 03/13/2024 | 18.50 | 1 |
| 08/13/2023 | 08/15/2023 | 28.00 | 1 |
| 03/10/2023 | 03/10/2023 | 7.50 | 1 |
| 08/09/2022 | 08/12/2022 | 17.00 | 1 |
| 11/02/2021 | 11/04/2021 | 14.00 | 1 |
| 10/17/2021 | 10/20/2021 | 1.00 | 1 |
| 09/13/2021 | 09/17/2021 | 54.00 | 2 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Portable #1 have?
Portable #1 has 91 MSHA violations on record, of which 29 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $34K.
What type of mine is Portable #1?
Portable #1 is a Surface mine producing SandAndGravel, located in Lovell, Big Horn County, WY. It currently has 10 employees.
Has anyone been injured or killed at Portable #1?
According to MSHA records, Portable #1 has 2 reported accident/injury records and 0 fatalities on file.
Who operates Portable #1?
Portable #1 is operated by Mountain Construction Company and controlled by D Michael Frost. MSHA Mine ID: 4801636.