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: 601 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
TRC Mine has $931 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.
$931
proposed penalties
$931
current assessed
$931
paid to date
$0
outstanding
10 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2020-11-16.
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.
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: 2020-11-23, 5 years ago
11%
of limit-tested samples over the exposure limit
10
samples
9
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz41 over
Diesel particulate (total carbon)4
Diesel Particulate Material2
Show the individual readings (18)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2006-07-18
Quartz, respirable, >1% Qtz
1.45
0.83
1.75
Front-end Loader Operator
2020-11-23
TC @ 160
63
160
0.39
Mucking Mach. Operator
2020-11-23
TC from EC @ 160
0
160
0.00
Mucking Mach. Operator
2020-11-23
EC @ 160
66
160
0.41
Mucking Mach. Operator
2020-11-23
TC @ 160
83
160
0.52
Mucking Mach. Operator
2020-11-23
TC from EC @ 160
0
160
0.00
Mucking Mach. Operator
2020-11-23
EC @ 160
46
160
0.29
Mucking Mach. Operator
2019-03-26
EC @ 160
77
160
0.48
Cleanup Man
2019-03-26
TC @ 160
91
160
0.57
Cleanup Man
2019-03-26
TC from EC @ 160
0
160
0.00
Bobcat Operator
2019-03-26
EC @ 160
71
160
0.44
Bobcat Operator
2019-03-26
TC @ 160
86
160
0.54
Bobcat Operator
2019-03-26
Quartz, respirable, >1% Qtz
0.4
1.03
0.39
Cleanup Man
2019-03-26
Quartz, respirable, >1% Qtz
0.3
Bobcat Operator
2019-03-26
TC from EC @ 160
0
160
0.00
Cleanup Man
2006-10-19
Quartz, respirable, >1% Qtz
0.31
0.68
0.46
Front-end Loader Operator
2006-07-18
Diesel Particulate Material
56.75
308
0.18
Front-end Loader Operator
2006-07-18
Diesel Particulate Material
25.42
308
0.08
Front-end Loader 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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
0
2025
0
2024
0
2023
0
2022
1
2021
1
2020
2
2019
2
2011
2
2010
3
2009
2
2008
1
2007
3
2006
3
2005
3
2004
2
2003
2
2002
2
Source: MSHA quarterly employment and production, updated weekly.
TRC Mine sits in Emery County, Utah, where the Census mining category is 7.5% 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.
Emery County, Utah · Population 9,968
7.5%
Mining share of county employment
$69,956
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
0
0
0
2026 Q1
0
0
0
2025 Q4
0
0
0
2025 Q3
0
0
0
2025 Q2
0
0
0
2025 Q1
0
0
0
2024 Q4
0
0
0
2024 Q3
0
0
0
Show 60 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
0
0
0
2024 Q1
0
0
0
2023 Q4
0
0
0
2023 Q3
0
0
0
2023 Q2
0
0
0
2023 Q1
0
0
0
2022 Q4
0
0
0
2022 Q3
6
0
0
0.0
2022 Q2
16
0
0
0.0
2022 Q1
0
0
0
2021 Q4
0
0
0
2021 Q3
137
0
0
0.0
2021 Q2
0
0
0
2021 Q1
781
0
0
0.0
2020 Q4
700
2
0
2857.1
2020 Q3
0
0
0
2020 Q2
1,306
0
0
0.0
2020 Q1
1,355
0
0
0.0
2019 Q4
1,009
1
0
991.1
2019 Q3
1,227
0
0
0.0
2019 Q2
1,074
0
0
0.0
2019 Q1
558
0
0
0.0
2011 Q3
24
0
0
0.0
2011 Q2
384
0
0
0.0
2011 Q1
384
0
0
0.0
2010 Q4
644
0
0
0.0
2010 Q3
640
1
0
1562.5
2010 Q2
384
0
0
0.0
2010 Q1
744
1
0
1344.1
2009 Q4
744
0
0
0.0
2009 Q3
216
0
0
0.0
2009 Q2
0
0
0
2009 Q1
1,008
0
0
0.0
2008 Q4
1,560
0
0
0.0
2008 Q3
0
0
0
2008 Q2
0
0
0
2008 Q1
0
0
0
2007 Q4
960
0
0
0.0
2007 Q3
600
0
0
0.0
2007 Q2
1,560
0
0
0.0
2007 Q1
1,560
0
0
0.0
2006 Q4
1,560
1
0
641.0
2006 Q3
1,560
3
1
1923.1
2006 Q2
1,560
0
0
0.0
2006 Q1
1,560
0
0
0.0
2005 Q4
1,560
0
0
0.0
2005 Q3
1,560
0
0
0.0
2005 Q2
1,300
0
0
0.0
2005 Q1
1,300
0
0
0.0
2004 Q4
960
0
0
0.0
2004 Q3
910
1
0
1098.9
2004 Q2
850
0
0
0.0
2004 Q1
768
0
0
0.0
2003 Q4
720
0
0
0.0
2003 Q3
960
0
0
0.0
2003 Q2
480
0
0
0.0
2003 Q1
480
0
0
0.0
2002 Q4
600
0
0
0.0
2002 Q3
480
0
0
0.0
2002 Q2
320
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2005 · 1 incident
June 29, 2005UT · Metal/Non-Metalstoper minerMACHINERY