Key Takeaway
Four Mile Complex is a active surface mine producing Nonmetal, located in Nephi, Juab County, UT. It has 89 violations on record (11 S&S) and $27K in proposed penalties. Operated by AMP Processing, LLC.
Four Mile Complex
Operator: AMP Processing, LLC
Controller: AZOMITE Mineral Products Inc
Location: Nephi, Juab County, UT
Employees: 2
Recent Violations
View all 89 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 03/04/2026 | 47.44(b) | Non-S&S | ModNegligence | $0 |
| 03/04/2026 | 56.4130(b) | Non-S&S | ModNegligence | $0 |
| 03/04/2026 | 56.4402 | Non-S&S | ModNegligence | $0 |
| 03/04/2026 | 56.4602 | Non-S&S | ModNegligence | $0 |
| 03/04/2026 | 56.14100(c) | Non-S&S | ModNegligence | $0 |
| 03/04/2026 | 56.15001 | Non-S&S | ModNegligence | $0 |
| 07/30/2025 | 56.16005 | Non-S&S | HighNegligence | $1,037 |
| 07/30/2025 | 56.12032 | Non-S&S | ModNegligence | $697 |
| 07/30/2025 | 56.14132(a) | Non-S&S | ModNegligence | $697 |
| 07/30/2025 | 56.14100(b) | Non-S&S | ModNegligence | $313 |
| 07/30/2025 | 56.14107(a) | S&S | ModNegligence | $1,550 |
| 02/19/2025 | 56.14112(b) | Non-S&S | ModNegligence | $151 |
| 02/18/2025 | 56.12004 | Non-S&S | ModNegligence | $151 |
| 02/18/2025 | 56.14107(a) | S&S | ModNegligence | $465 |
| 02/18/2025 | 56.14107(a) | S&S | ModNegligence | $465 |
| 02/18/2025 | 56.20003(b) | Non-S&S | ModNegligence | $151 |
| 02/18/2025 | 56.16005 | Non-S&S | ModNegligence | $151 |
| 04/17/2024 | 56.11002 | Non-S&S | ModNegligence | $204 |
| 04/17/2024 | 56.4201(a)(2) | Non-S&S | ModNegligence | $204 |
| 02/20/2024 | 47.41(a) | Non-S&S | ModNegligence | $305 |
Accidents & Injuries
View all 7 →| Date | Classification | Injury | Days Lost |
|---|---|---|---|
| 08/27/2025 | MACHINERY | DAYS AWAY FROM WORK ONLY | None |
| 07/19/2024 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/20/2022 | HANDLING OF MATERIALS | PERM TOT OR PERM PRTL DISABLTY | None |
| 02/28/2020 | HANDTOOLS (NONPOWERED) | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/30/2019 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 05/01/2019 | HANDLING OF MATERIALS | NO DYS AWY FRM WRK,NO RSTR ACT | None |
| 01/09/2015 | MACHINERY | NO DYS AWY FRM WRK,NO RSTR ACT | None |
Inspections
View all 26 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 03/03/2026 | 03/05/2026 | 0.00 | 0 |
| 07/30/2025 | 08/04/2025 | 24.00 | 1 |
| 02/18/2025 | 02/20/2025 | 30.50 | 1 |
| 04/17/2024 | 04/18/2024 | 17.50 | 1 |
| 02/20/2024 | 02/22/2024 | 17.50 | 1 |
| 04/25/2023 | 04/27/2023 | 14.50 | 1 |
| 12/15/2022 | 12/16/2022 | 13.00 | 1 |
| 07/06/2022 | 07/08/2022 | 14.50 | 1 |
| 04/20/2022 | 04/26/2022 | 7.50 | 1 |
| 02/15/2022 | 02/17/2022 | 16.00 | 1 |
Mine Details
Related Mines
Frequently Asked Questions
How many MSHA violations does Four Mile Complex have?
Four Mile Complex has 89 MSHA violations on record, of which 11 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $27K.
What type of mine is Four Mile Complex?
Four Mile Complex is a Surface mine producing Nonmetal, located in Nephi, Juab County, UT. It currently has 2 employees.
Has anyone been injured or killed at Four Mile Complex?
According to MSHA records, Four Mile Complex has 7 reported accident/injury records and 0 fatalities on file.
Who operates Four Mile Complex?
Four Mile Complex is operated by AMP Processing, LLC and controlled by AZOMITE Mineral Products Inc. MSHA Mine ID: 4202621.