Portable #1 has $3K in proposed MSHA penalties and $762 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
1
Years on record
2015
Latest incident
Nov 2015
Compliance record
MSHA citations since 2006
18
citations
6
significant & substantial
$3,209
proposed penalties
$2,447
paid to date
76% of proposed penalties paid to date, a $762 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2002
31
inspections on record
289
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: 289 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 #1 has $3K in proposed MSHA penalties and $762 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.
$3K
proposed penalties
$3K
current assessed
$2K
paid to date
$762
outstanding
18 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2021-08-17.
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: 2025-07-29
0%
of limit-tested samples over the exposure limit
3
samples
1
limit-tested
Most sampled contaminants
Respirable dust, <.1mg2
Quartz, respirable, >1% Qtz1
Show the individual readings (3)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-07-29
Quartz, respirable, >1% Qtz
0.22
1.03
0.21
Front-end Loader Operator
2016-09-22
Respirable dust, <.1mg
0
Front-end Loader Operator
2016-09-22
Respirable dust, <.1mg
0
Backhoe 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
105
2024
0
2023
1
2022
0
2021
1
2020
2
2019
1
2018
1
2017
1
2016
2
2015
2
2014
1
2009
0
2008
2
2007
3
2006
4
2005
2
2004
2
2003
0
Source: MSHA quarterly employment and production, updated weekly.
Portable #1 sits in Fremont County, Wyoming, where the Census mining category is 3.1% 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.
Fremont County, Wyoming · Population 39,472
3.1%
Mining share of county employment
$64,646
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
2
0
0
0.0
2024 Q3
0
0
0
2024 Q2
0
0
0
2024 Q1
0
0
0
2023 Q4
120
0
0
0.0
Show 51 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2023 Q3
736
0
0
0.0
2023 Q2
0
0
0
2023 Q1
0
0
0
2022 Q4
0
0
0
2022 Q2
0
0
0
2022 Q1
0
0
0
2021 Q4
0
0
0
2021 Q3
428
4
3
9345.8
2021 Q2
0
0
0
2021 Q1
0
1
0
2020 Q4
84
0
0
0.0
2020 Q3
480
0
0
0.0
2020 Q2
18
0
0
0.0
2020 Q1
0
4
0
2019 Q4
52
0
0
0.0
2019 Q1
0
0
0
2018 Q4
0
0
0
2018 Q3
600
3
2
5000.0
2018 Q2
0
0
0
2018 Q1
0
0
0
2017 Q4
0
0
0
2017 Q3
0
0
0
2017 Q2
18
0
0
0.0
2017 Q1
0
0
0
2016 Q4
63
0
0
0.0
2016 Q3
954
1
1
1048.2
2016 Q2
0
1
0
2016 Q1
80
0
0
0.0
2015 Q4
36
0
0
0.0
2015 Q3
28
0
0
0.0
2015 Q2
12
0
0
0.0
2015 Q1
0
0
0
2014 Q4
0
0
0
2014 Q3
27
0
0
0.0
2009 Q3
0
1
0
2008 Q4
160
0
0
0.0
2008 Q2
105
0
0
0.0
2008 Q1
0
0
0
2007 Q4
842
0
0
0.0
2007 Q3
1,032
0
0
0.0
2007 Q2
732
0
0
0.0
2007 Q1
804
0
0
0.0
2006 Q4
0
0
0
2006 Q3
714
1
0
1400.6
2006 Q2
1,231
0
0
0.0
2006 Q1
674
0
0
0.0
2005 Q4
628
0
0
0.0
2005 Q3
0
0
0
2004 Q4
0
0
0
2004 Q3
1,140
0
0
0.0
2003 Q4
0
0
0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2015 · 1 incident
November 2, 2015WY · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanSLIP OR FALL OF PERSON
While installing cold weather enclosure on crusher, crusher owner, stepped on an unstable platform causing enclosure to tip over and causing owner operator to fall approx. 10 feet onto his back on catwalk below. Causing four broken ribs on his left side and a fractured left wrist.