AMP Processing, LLC · Caught in, under or between running or meshing objects
manually spinning pulley with V belt and got right little finger caught between pulley and v belt.
Four Mile Complex: 93 MSHA citations Metal/Non-Metal
Four Mile Complex has $29K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
Watch this mine
Email me when a new MSHA incident is filed at Four Mile Complex.
- Fatalities
- 0
- Total incidents
- 10
- Years on record
- 2015–2026
- Latest incident
- May 2026
Compliance record
MSHA citations since 2014
93
citations
11
significant & substantial
$29,405
proposed penalties
$29,405
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2014
28
inspections on record
566
inspection hours
n/a
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.Rate withheld: 566 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Four Mile Complex has $29K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$29K
proposed penalties
$29K
current assessed
$29K
paid to date
$0
outstanding
91 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-05-27.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘ
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.11.8%
significant & substantial
15.1%
high negligence or reckless
11.8%
reasonably likely or greater
60.2%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 1.1% low, 83.9% moderate, 15.1% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
ⓘ
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.Metal and nonmetal contaminants (personal samples)
ⓘ
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.
Last sampled: 2025-07-31
ⓘ
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.0%
of limit-tested samples over the exposure limit
12
samples
2
limit-tested
Most sampled contaminants
- Unlisted Particulate, respirable, <1% Qtz6
- Quartz, respirable, >1% Qtz4
- Nuisance dust, respirable, <1% Qtz1
- Respirable dust, <.1mg1
Show the individual readings (12)
| Date | Contaminant | Concentration | Limit | Conc / limit | Occupation |
|---|---|---|---|---|---|
| 2025-07-31 | Nuisance dust, respirable, <1% Qtz | 0.62 | 10 | 0.06 | Crusher Oper/Worker |
| 2025-07-31 | Quartz, respirable, >1% Qtz | 0.67 | Bagging Operator | ||
| 2021-05-18 | Unlisted Particulate, respirable, <1% Qtz | 0.33 | Bagging Operator | ||
| 2021-05-18 | Unlisted Particulate, respirable, <1% Qtz | 0.35 | Bagging Operator | ||
| 2021-05-18 | Unlisted Particulate, respirable, <1% Qtz | 0.72 | Crusher Oper/Worker | ||
| 2021-05-18 | Respirable dust, <.1mg | 0 | Front-end Loader Operator | ||
| 2018-03-01 | Quartz, respirable, >1% Qtz | 0.82 | Bagging Operator | ||
| 2018-03-01 | Quartz, respirable, >1% Qtz | 0.5 | Dry Screen Plant Operator | ||
| 2014-11-25 | Unlisted Particulate, respirable, <1% Qtz | 0.43 | Bagging Operator | ||
| 2014-11-25 | Unlisted Particulate, respirable, <1% Qtz | 0.24 | Bagging Operator | ||
| 2014-11-25 | Unlisted Particulate, respirable, <1% Qtz | 0.39 | Bagging Operator | ||
| 2014-11-25 | Quartz, respirable, >1% Qtz | 0.43 | 2.69 | 0.16 | Bagging Operator |
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.
Four Mile Complex recorded 7.97 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘ
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.7.97
total case rate
7.97
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Utah, metal and nonmetal mining averaged 1.92 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
| Year | total case rate | days-away | fatal |
|---|---|---|---|
| 2025 * | 7.97 | 7.97 | 0.000 |
| 2024 * | 7.78 | 0.00 | 0.000 |
| 2023 * | 0.00 | 0.00 | 0.000 |
| 2022 * | 7.19 | 7.19 | 0.000 |
| 2021 * | 0.00 | 0.00 | 0.000 |
| 2020 * | 8.72 | 0.00 | 0.000 |
| 2019 * | 17.61 | 0.00 | 0.000 |
| 2018 * | 0.00 | 0.00 | 0.000 |
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
- AMP Processing, LLC 2014 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
| Year | Employees |
|---|---|
| 2026 | 24 |
| 2025 | 16 |
| 2024 | 16 |
| 2023 | 15 |
| 2022 | 17 |
| 2021 | 16 |
| 2020 | 13 |
| 2019 | 13 |
| 2018 | 14 |
| 2017 | 15 |
| 2016 | 18 |
| 2015 | 22 |
| 2014 | 18 |
Source: MSHA quarterly employment and production, updated weekly.
Four Mile Complex sits in Juab County, Utah, where the Census mining category is 1.2% of county employment.
Local economic context
ⓘ
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.Juab County, Utah · Population 12,273
1.2%
Mining share of county employment
$89,803
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘ
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2026 Q2 | 8,563 | 3 | 0 | 350.3 |
| 2026 Q1 | 9,464 | 6 | 0 | 634.0 |
| 2025 Q4 | 5,988 | 0 | 0 | 0.0 |
| 2025 Q3 | 5,871 | 5 | 1 | 851.6 |
| 2025 Q2 | 6,786 | 0 | 0 | 0.0 |
| 2025 Q1 | 6,458 | 6 | 2 | 929.1 |
| 2024 Q4 | 6,136 | 0 | 0 | 0.0 |
| 2024 Q3 | 6,281 | 0 | 0 | 0.0 |
Show 42 earlier quarters Hide earlier quarters
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2024 Q2 | 6,679 | 2 | 0 | 299.4 |
| 2024 Q1 | 6,617 | 5 | 1 | 755.6 |
| 2023 Q4 | 8,308 | 0 | 0 | 0.0 |
| 2023 Q3 | 6,074 | 0 | 0 | 0.0 |
| 2023 Q2 | 6,335 | 3 | 0 | 473.6 |
| 2023 Q1 | 5,609 | 0 | 0 | 0.0 |
| 2022 Q4 | 6,679 | 1 | 0 | 149.7 |
| 2022 Q3 | 6,911 | 1 | 0 | 144.7 |
| 2022 Q2 | 6,996 | 3 | 3 | 428.8 |
| 2022 Q1 | 7,247 | 2 | 0 | 276.0 |
| 2021 Q4 | 7,133 | 0 | 0 | 0.0 |
| 2021 Q3 | 6,826 | 0 | 0 | 0.0 |
| 2021 Q2 | 7,073 | 1 | 0 | 141.4 |
| 2021 Q1 | 6,061 | 0 | 0 | 0.0 |
| 2020 Q4 | 5,455 | 0 | 0 | 0.0 |
| 2020 Q3 | 5,442 | 2 | 0 | 367.5 |
| 2020 Q2 | 6,408 | 0 | 0 | 0.0 |
| 2020 Q1 | 5,633 | 0 | 0 | 0.0 |
| 2019 Q4 | 5,507 | 1 | 0 | 181.6 |
| 2019 Q3 | 5,638 | 0 | 0 | 0.0 |
| 2019 Q2 | 5,836 | 5 | 1 | 856.8 |
| 2019 Q1 | 5,736 | 3 | 0 | 523.0 |
| 2018 Q4 | 6,516 | 0 | 0 | 0.0 |
| 2018 Q3 | 5,439 | 4 | 0 | 735.4 |
| 2018 Q2 | 6,356 | 0 | 0 | 0.0 |
| 2018 Q1 | 6,380 | 20 | 0 | 3134.8 |
| 2017 Q4 | 5,804 | 0 | 0 | 0.0 |
| 2017 Q3 | 5,989 | 10 | 2 | 1669.7 |
| 2017 Q2 | 6,016 | 0 | 0 | 0.0 |
| 2017 Q1 | 5,975 | 3 | 0 | 502.1 |
| 2016 Q4 | 5,481 | 0 | 0 | 0.0 |
| 2016 Q3 | 6,399 | 1 | 0 | 156.3 |
| 2016 Q2 | 7,216 | 0 | 0 | 0.0 |
| 2016 Q1 | 7,472 | 0 | 0 | 0.0 |
| 2015 Q4 | 5,409 | 2 | 0 | 369.8 |
| 2015 Q3 | 7,178 | 0 | 0 | 0.0 |
| 2015 Q2 | 8,033 | 0 | 0 | 0.0 |
| 2015 Q1 | 6,841 | 0 | 0 | 0.0 |
| 2014 Q4 | 7,133 | 3 | 1 | 420.6 |
| 2014 Q3 | 7,291 | 0 | 0 | 0.0 |
| 2014 Q2 | 6,759 | 0 | 0 | 0.0 |
| 2014 Q1 | 3,868 | 0 | 0 | 0.0 |
No fatalities recorded at this mine.
Reportable incidents
10 on file2026 · 3 incidents
March 13, 2026
UT · Metal/Non-Metal
haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver
SLIP OR FALL OF PERSON
AMP Processing, LLC · Fall from machine
Employee was changing the air filter in Semi truck. Slipped off truck and fell to ground hitting EE's head
March 2, 2026
UT · Metal/Non-Metal
front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator
HANDLING OF MATERIALS
AMP Processing, LLC · Caught in, under or between a moving and a stationary object
Employee was changing a part in the Vertical Shalt Conductor and the door shut on EE's finger
2025 · 1 incident
August 27, 2025
UT · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
MACHINERY
AMP Processing, LLC · Caught in, under or between running or meshing objects
Index finger on right had got caught in the chute of the bagging machine and finger was cut and torn from the bone
2024 · 1 incident
July 19, 2024
UT · Metal/Non-Metal
laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman
MACHINERY
AMP Processing, LLC · Struck by... (Not Elsewhere Classified)
Employee was drilling a hole in flashing on crusher and the drill slipped and drilled/cut into left hand between first and second finger in palm.
2022 · 1 incident
January 20, 2022
UT · Metal/Non-Metal
assistant mine foreman, assistant mine manager
HANDLING OF MATERIALS
AMP Processing, LLC · Over-exertion in lifting objects
Employee was carrying an electric motor to replace a motor that was no longer working. EE felt a strain in groin area. EE reported the incident on 2/25/22 to employer when a hernia became apparent. EE has not missed any work time.
2020 · 1 incident
February 28, 2020
UT · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
HANDTOOLS (NONPOWERED)
AMP Processing, LLC · Struck by... (Not Elsewhere Classified)
Trying to dislodge 6" rock from 3/4" rock bin feeder. Rock gave way and pry head in the forehead
2019 · 2 incidents
May 30, 2019
UT · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
HANDLING OF MATERIALS
AMP Processing, LLC · Over-exertion in lifting objects
Employee was stapling slip sheets on pallets and EE moved/lifted a pallet and strained lower back.
May 1, 2019
UT · Metal/Non-Metal
warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator
HANDLING OF MATERIALS
AMP Processing, LLC · Caught in, under or between a moving and a stationary object
An employee with the help of another employee was getting a piece of sheet metal off storage rack. One employee pulled on sheet metal and other employee got little finger pinched between sheet metal. EE received 5 stitches for cut.
2015 · 1 incident
January 9, 2015
UT · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
MACHINERY
AMP Processing, LLC · Struck by... (Not Elsewhere Classified)
Employee was installing a bracket in a loader to hold a CB. Using drill and screws to put bracket into place. Screw slipped and went to left hand.