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: 353 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 #2 has $11K 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.
$11K
proposed penalties
$11K
current assessed
$11K
paid to date
$0
outstanding
70 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2023-10-19.
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: 2018-10-29, 7 years ago
0%
of limit-tested samples over the exposure limit
18
samples
14
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz11
Nuisance dust, respirable, <1% Qtz3
Respirable dust, <.1mg2
Unlisted Particulate, respirable, <1% Qtz2
Show the individual readings (18)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2018-10-29
Unlisted Particulate, respirable, <1% Qtz
0.22
Crusher Oper/Worker
2018-10-29
Unlisted Particulate, respirable, <1% Qtz
0.3
Backhoe Operator
2013-04-16
Nuisance dust, respirable, <1% Qtz
0.12
10
0.01
Front-end Loader Operator
2012-05-23
Respirable dust, <.1mg
0
Rotary Bucket Ex. Operator
2012-05-23
Quartz, respirable, >1% Qtz
0.35
1.15
0.30
Crusher Oper/Worker
2009-06-11
Nuisance dust, respirable, <1% Qtz
0.58
10
0.06
Crusher Oper/Worker
2009-06-11
Quartz, respirable, >1% Qtz
1.28
2.83
0.45
Utility Man
2009-06-11
Quartz, respirable, >1% Qtz
0.85
1.06
0.80
Front-end Loader Operator
2009-06-11
Quartz, respirable, >1% Qtz
0.79
1.65
0.48
Supervisor, Co. Official
2008-06-24
Nuisance dust, respirable, <1% Qtz
0.61
10
0.06
Cleanup Man
2008-06-24
Quartz, respirable, >1% Qtz
0.35
0.97
0.36
Crusher Oper/Worker
2004-05-19
Respirable dust, <.1mg
0
Laborer, Bullgang
2004-05-19
Quartz, respirable, >1% Qtz
0.35
0.9
0.39
Laborer, Bullgang
2004-05-19
Quartz, respirable, >1% Qtz
0.56
1.2
0.47
Crusher Oper/Worker
2003-06-04
Quartz, respirable, >1% Qtz
0.33
2.02
0.16
Laborer, Bullgang
2003-06-04
Quartz, respirable, >1% Qtz
0.3
1.64
0.18
Laborer, Bullgang
2003-06-04
Quartz, respirable, >1% Qtz
0.36
2.14
0.17
Front-end Loader Operator
2003-06-04
Quartz, respirable, >1% Qtz
1.98
2.4
0.83
Crusher Oper/Worker
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
2024
18
2023
15
2022
8
2021
6
2020
2
2019
5
2018
2
2017
1
2016
4
2015
5
2014
2
2013
5
2012
5
2011
3
2010
1
2009
4
2008
7
2007
5
2006
4
2005
7
2004
5
2003
5
2002
7
2001
1
2000
5
Source: MSHA quarterly employment and production, updated weekly.
Portable #2 sits in Webster County, Iowa, where the Census mining category is 0.6% 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.
Webster County, Iowa · Population 36,848
0.6%
Mining share of county employment
$68,054
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
2024 Q2
6,647
0
0
0.0
2024 Q1
6,649
0
0
0.0
2023 Q4
11,095
1
0
90.1
2023 Q3
348
1
0
2873.6
2023 Q2
2,158
0
0
0.0
2023 Q1
370
0
0
0.0
2022 Q4
3,040
0
0
0.0
2022 Q3
1,781
1
0
561.5
Show 82 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2022 Q2
16
0
0
0.0
2022 Q1
1,688
0
0
0.0
2021 Q4
6,209
0
0
0.0
2021 Q3
2
0
0
0.0
2021 Q2
4
0
0
0.0
2021 Q1
4
0
0
0.0
2020 Q4
4
0
0
0.0
2020 Q3
4
0
0
0.0
2020 Q2
4
0
0
0.0
2020 Q1
174
0
0
0.0
2019 Q4
3,261
0
0
0.0
2019 Q3
5
0
0
0.0
2019 Q2
10
0
0
0.0
2019 Q1
1,711
0
0
0.0
2018 Q4
327
3
0
9174.3
2018 Q3
10
0
0
0.0
2018 Q2
10
0
0
0.0
2018 Q1
10
0
0
0.0
2017 Q4
10
0
0
0.0
2017 Q3
10
0
0
0.0
2017 Q2
10
0
0
0.0
2017 Q1
5
0
0
0.0
2016 Q4
1,937
0
0
0.0
2016 Q3
219
0
0
0.0
2016 Q2
512
0
0
0.0
2016 Q1
10
0
0
0.0
2015 Q4
1,220
6
0
4918.0
2015 Q3
580
0
0
0.0
2015 Q2
409
1
0
2445.0
2015 Q1
82
0
0
0.0
2014 Q4
440
0
0
0.0
2014 Q3
10
0
0
0.0
2014 Q2
10
0
0
0.0
2014 Q1
10
0
0
0.0
2013 Q4
582
1
0
1718.2
2013 Q3
1,348
0
0
0.0
2013 Q2
553
2
1
3616.6
2013 Q1
550
0
0
0.0
2012 Q4
10
0
0
0.0
2012 Q3
1,474
0
0
0.0
2012 Q2
1,310
4
1
3053.4
2012 Q1
10
0
0
0.0
2011 Q4
10
0
0
0.0
2011 Q3
2,135
0
0
0.0
2011 Q2
10
0
0
0.0
2011 Q1
5
0
0
0.0
2010 Q4
5
0
0
0.0
2010 Q3
10
1
0
100000.0
2010 Q2
10
0
0
0.0
2010 Q1
10
0
0
0.0
2009 Q4
5
0
0
0.0
2009 Q3
1,786
0
0
0.0
2009 Q2
2,358
4
0
1696.4
2009 Q1
8
0
0
0.0
2008 Q4
1,705
0
0
0.0
2008 Q3
2,894
0
0
0.0
2008 Q2
695
7
1
10071.9
2007 Q2
673
0
0
0.0
2007 Q1
2,105
0
0
0.0
2006 Q4
2,919
0
0
0.0
2006 Q3
2,778
0
0
0.0
2006 Q2
5
0
0
0.0
2006 Q1
1
0
0
0.0
2005 Q4
2,970
4
4
1346.8
2005 Q3
597
0
0
0.0
2005 Q2
893
0
0
0.0
2005 Q1
1
0
0
0.0
2004 Q4
2,053
5
2
2435.5
2004 Q3
1
0
0
0.0
2004 Q2
3,245
6
1
1849.0
2004 Q1
1
0
0
0.0
2003 Q4
1
0
0
0.0
2003 Q2
3,584
7
1
1953.1
2003 Q1
1
0
0
0.0
2002 Q4
1
0
0
0.0
2002 Q3
1
0
0
0.0
2002 Q2
4,072
12
4
2947.0
2002 Q1
1,049
0
0
0.0
2001 Q1
1
0
0
0.0
2000 Q4
1
0
0
0.0
2000 Q3
92
0
0
0.0
2000 Q1
3,079
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2000 · 1 incident
February 7, 2000IA · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanSLIP OR FALL OF PERSON