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: 160 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Portable 4 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
23 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2016-09-07.
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 controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
2
2019
2
2017
0
2016
2
2015
3
2011
0
2010
0
2009
2
2008
6
2007
6
2006
1
2003
0
2002
0
2001
1
2000
3
Source: MSHA quarterly employment and production, updated weekly.
Portable 4 sits in Utah County, Utah, where the Census mining category is 0.2% 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.
Utah County, Utah · Population 683,622
0.2%
Mining share of county employment
$96,877
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
180
0
0
0.0
2019 Q4
113
0
0
0.0
2019 Q3
513
0
0
0.0
2017 Q4
0
0
0
2017 Q3
0
0
0
2017 Q2
0
0
0
2017 Q1
0
0
0
2016 Q4
0
0
0
Show 38 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2016 Q3
723
2
0
2766.3
2016 Q2
1,154
0
0
0.0
2016 Q1
720
0
0
0.0
2015 Q4
1,622
0
0
0.0
2015 Q3
293
0
0
0.0
2011 Q2
0
0
0
2011 Q1
0
0
0
2010 Q4
0
0
0
2010 Q2
0
0
0
2010 Q1
0
0
0
2009 Q4
0
0
0
2009 Q3
0
0
0
2009 Q2
939
0
0
0.0
2009 Q1
448
1
1
2232.1
2008 Q4
810
0
0
0.0
2008 Q3
786
0
0
0.0
2008 Q2
1,366
0
0
0.0
2008 Q1
289
0
0
0.0
2007 Q4
2,429
0
0
0.0
2007 Q2
518
0
0
0.0
2007 Q1
427
0
0
0.0
2006 Q4
40
0
0
0.0
2006 Q3
40
0
0
0.0
2006 Q2
40
0
0
0.0
2003 Q3
0
0
0
2003 Q2
0
0
0
2003 Q1
0
0
0
2002 Q4
0
0
0
2002 Q3
160
0
0
0.0
2002 Q2
0
0
0
2002 Q1
0
0
0
2001 Q4
0
0
0
2001 Q3
1,271
0
0
0.0
2001 Q2
0
0
0
2001 Q1
0
0
0
2000 Q4
0
0
0
2000 Q3
1,111
0
0
0.0
2000 Q2
2,147
13
8
6055.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2006 · 1 incident
June 20, 2006UT · Metal/Non-Metalstone finishing and sizing personnel, stone/rock cut/polish/saw operator, splitter, cutter, trimmerHANDLING OF MATERIALS