CASTLE VALLEY PREP PLANT has $4K 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 CASTLE VALLEY PREP PLANT.
Fatalities
0
Total incidents
1
Years on record
2022
Latest incident
Apr 2022
Compliance record
MSHA citations since 2010
29
citations
5
significant & substantial
$3,726
proposed penalties
$3,726
paid to date
100% of proposed penalties paid to date, a $0 gap.
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: 879 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
CASTLE VALLEY PREP PLANT has $4K 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.
$4K
proposed penalties
$4K
current assessed
$4K
paid to date
$0
outstanding
29 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2022-05-20.
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.
Source: MSHA violations gravity and negligence coding, updated weekly.
MSHA sampling at CASTLE VALLEY PREP PLANT shows 99% of 148 respirable coal dust samples met the 1.5 mg/m3 standard.
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.
Respirable coal dust
ⓘRespirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.
Last sampled: 2026-06-01
99%
within 1.5 mg/m3
148
samples
2.94
dust max (mg/m3)
0
over MSHA ECV
ⓘThe excessive concentration value (ECV) is MSHA's own per-sample enforcement threshold, which builds in measurement uncertainty; a sample over its ECV can trigger a citation. The count covers only samples MSHA assigned an ECV.
105 samples taken by MSHA inspectors, 43 by the operator.
Noise
ⓘThe share counts noise samples whose measured dose exceeded the 90 dBA permissible exposure limit. It describes the sampled workplace, not what reached the miner's ear: hearing conservation programs and the hearing protection worn during the shift are recorded separately and are not reflected here.
Health sampling trend
ⓘ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.
Respirable coal dust by year
ⓘRespirable coal dust and silica figures cover coal facilities. Dust compliance is measured against the current 1.5 mg/m3 standard; samples predating the 2014 standard are included, so compliance rates are a coarse historical signal.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
10
2025
6
2024
7
2023
7
2022
5
2021
5
2020
8
2019
9
2018
4
2017
6
2016
4
2015
3
2014
4
2013
3
2012
5
2011
6
2010
6
2009
5
2008
5
2007
5
2006
6
Source: MSHA quarterly employment and production, updated weekly.
CASTLE VALLEY PREP PLANT sits in Carbon County, Utah, where the Census mining category is 5.9% 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.
Carbon County, Utah · Population 20,446
5.9%
Mining share of county employment
$53,673
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
6,813
0
0
0.0
2026 Q1
4,844
0
0
0.0
2025 Q4
2,234
0
0
0.0
2025 Q3
2,382
0
0
0.0
2025 Q2
3,205
0
0
0.0
2025 Q1
2,798
0
0
0.0
2024 Q4
3,020
0
0
0.0
2024 Q3
3,182
0
0
0.0
Show 71 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
3,457
0
0
0.0
2024 Q1
4,889
0
0
0.0
2023 Q4
4,256
0
0
0.0
2023 Q3
2,794
0
0
0.0
2023 Q2
2,812
0
0
0.0
2023 Q1
2,571
0
0
0.0
2022 Q4
2,226
0
0
0.0
2022 Q3
2,217
0
0
0.0
2022 Q2
2,634
1
0
379.7
2022 Q1
2,406
0
0
0.0
2021 Q4
2,074
0
0
0.0
2021 Q3
2,283
0
0
0.0
2021 Q2
2,475
0
0
0.0
2021 Q1
2,365
0
0
0.0
2020 Q4
2,216
0
0
0.0
2020 Q3
2,842
0
0
0.0
2020 Q2
3,967
0
0
0.0
2020 Q1
6,319
1
0
158.3
2019 Q4
7,215
0
0
0.0
2019 Q3
5,203
0
0
0.0
2019 Q2
3,299
0
0
0.0
2019 Q1
2,260
0
0
0.0
2018 Q4
2,238
0
0
0.0
2018 Q3
1,886
1
0
530.2
2018 Q2
2,010
0
0
0.0
2018 Q1
2,191
4
0
1825.7
2017 Q4
4,145
0
0
0.0
2017 Q3
4,339
5
2
1152.3
2017 Q2
2,685
0
0
0.0
2017 Q1
2,642
1
0
378.5
2016 Q4
2,440
0
0
0.0
2016 Q3
1,565
0
0
0.0
2016 Q2
1,225
0
0
0.0
2016 Q1
1,376
0
0
0.0
2015 Q4
1,104
2
2
1811.6
2015 Q3
1,073
0
0
0.0
2015 Q2
1,206
0
0
0.0
2015 Q1
1,917
0
0
0.0
2014 Q4
2,462
0
0
0.0
2014 Q3
1,857
0
0
0.0
2014 Q2
2,055
0
0
0.0
2014 Q1
2,018
3
0
1486.6
2013 Q4
1,989
0
0
0.0
2013 Q3
2,063
0
0
0.0
2013 Q2
1,453
0
0
0.0
2013 Q1
644
0
0
0.0
2012 Q4
185
0
0
0.0
2012 Q3
2,159
3
0
1389.5
2012 Q2
2,521
0
0
0.0
2012 Q1
2,330
2
0
858.4
2011 Q4
2,161
0
0
0.0
2011 Q3
3,747
0
0
0.0
2011 Q2
4,683
0
0
0.0
2011 Q1
3,641
2
0
549.3
2010 Q4
3,503
0
0
0.0
2010 Q3
3,005
3
1
998.3
2010 Q2
3,702
0
0
0.0
2010 Q1
4,610
0
0
0.0
2009 Q4
3,873
0
0
0.0
2009 Q3
1,891
0
0
0.0
2009 Q2
2,262
0
0
0.0
2009 Q1
3,676
0
0
0.0
2008 Q4
2,435
0
0
0.0
2008 Q3
2,639
0
0
0.0
2008 Q2
2,712
0
0
0.0
2008 Q1
2,653
0
0
0.0
2007 Q4
2,177
0
0
0.0
2007 Q3
2,458
0
0
0.0
2007 Q2
2,614
0
0
0.0
2007 Q1
2,581
0
0
0.0
2006 Q4
3,372
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2022 · 1 incident
April 7, 2022UT · Coalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDLING OF MATERIALS
A plugged chute switch shut the plant feed belt off. An individual reported to the chute. EE saw 6" - 18" rock plugging the grizzly in the chute. EE attempted to dislodge one of the rocks with hand. Another rock dislodged dropping onto EE's hand smashing the right hand, little finger between the two rocks. The outside edge of EE's little finger was lacerated requiring stitches.