OPPERMAN PORTABLE #2 has $11K 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 OPPERMAN PORTABLE #2.
Fatalities
0
Total incidents
2
Years on record
2009–2013
Latest incident
Sep 2013
Compliance record
MSHA citations since 2004
65
citations
24
significant & substantial
$11,197
proposed penalties
$11,197
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: 422 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
OPPERMAN 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
64 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-06-26.
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: 2019-10-16, 6 years ago
20%
of limit-tested samples over the exposure limit
18
samples
5
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz51 over
Respirable dust, <.1mg12
Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (18)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2013-01-08
Quartz, respirable, >1% Qtz
1.42
0.68
2.09
Bulldozer Operator
2019-10-16
Respirable dust, <.1mg
0
Surveyor
2019-10-16
Respirable dust, <.1mg
0
Cleanup Man
2019-10-16
Respirable dust, <.1mg
0
Crusher Oper/Worker
2019-10-16
Respirable dust, <.1mg
0
Front-end Loader Operator
2013-04-03
Quartz, respirable, >1% Qtz
0.27
0.71
0.38
Bulldozer Operator
2013-01-08
Quartz, respirable, >1% Qtz
0.17
1.11
0.15
Laborer, Bullgang
2013-01-08
Respirable dust, <.1mg
0
Front-end Loader Operator
2013-01-08
Quartz, respirable, >1% Qtz
0.21
1.84
0.11
Crusher Oper/Worker
2011-06-01
Respirable dust, <.1mg
0
Front-end Loader Operator
2011-06-01
Respirable dust, <.1mg
0
Backhoe Operator
2011-06-01
Unlisted Particulate, respirable, <1% Qtz
0.29
Crusher Oper/Worker
2011-06-01
Quartz, respirable, >1% Qtz
0.16
1.04
0.15
Bulldozer Operator
2009-04-22
Respirable dust, <.1mg
0
Crusher Oper/Worker
2009-04-22
Respirable dust, <.1mg
0
Front-end Loader Operator
2007-08-22
Respirable dust, <.1mg
0
Crusher Oper/Worker
2007-08-22
Respirable dust, <.1mg
0
Crusher Oper/Worker
2007-08-22
Respirable dust, <.1mg
0
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
2
2025
2
2024
2
2023
3
2022
1
2021
1
2020
3
2019
5
2018
4
2017
5
2016
5
2015
5
2014
5
2013
5
2012
5
2011
4
2010
5
2009
5
2008
0
2007
3
2006
0
2005
2
2004
2
2003
3
Source: MSHA quarterly employment and production, updated weekly.
OPPERMAN PORTABLE #2 sits in Tripp County, South Dakota, where the Census mining category is 0.0% 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.
Tripp County, South Dakota · Population 5,607
0.0%
Mining share of county employment
$58,854
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
Employee was performing routine maintenance on the secondary crusher. After locking out the gen-set, employee was checking wear parts, slipped and fell. Surfaces were still wet from the rain the night before.
2009 · 1 incident
October 13, 2009SD · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDLING OF MATERIALS
The chute feeding the VSI Crusher plugged, which at that time, the equipment was shut down to clean out the rocks. When the miner was removing the rocks out of the plugged chute, another rock shifted and smashed his finger causing the injury, which required approximately 8 sutures. The rocks in the chute were 2"-8" in size.