Mining Incidents

PORTABLE #1: 6 MSHA citations Metal/Non-Metal

Rock Services · Surface
Controlled by Randy Silbernagel
Buffalo, Johnson County, WY  ·  Abandoned
MSHA Mine ID: 4801555

PORTABLE #1 has $600 in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
0
Years on record
Latest incident
Compliance record
MSHA citations since 2008
6
citations
0
significant & substantial
$600
proposed penalties
$600
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
19
inspections on record
232
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: 232 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 $600 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.
$600
proposed penalties
$600
current assessed
$600
paid to date
$0
outstanding
6 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2013-04-02.
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.
0.0%
significant & substantial
16.7%
high negligence or reckless
0.0%
reasonably likely or greater
66.7%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 33.3% low, 50.0% moderate, 16.7% high, 0.0% reckless.
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: 2009-10-27, 16 years ago
3
samples
0
limit-tested
Most sampled contaminants
  • Respirable dust, <.1mg3
Show the individual readings (3)
Date Contaminant Concentration Limit Conc / limit Occupation
2009-10-27 Respirable dust, <.1mg 0 Front-end Loader Operator
2007-02-07 Respirable dust, <.1mg 0 Front-end Loader Operator
2006-04-05 Respirable dust, <.1mg 0 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.
Ownership history
  1. Rock Services 1998 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2016 1
2015 1
2014 1
2013 1
2012 1
2011 1
2010 1
2009 1
2008 1
2007 1
2006 1
2005 1
2004 1
2003 1
2002 1
2001 1
2000 1
Source: MSHA quarterly employment and production, updated weekly.

PORTABLE #1 sits in Johnson County, Wyoming, where the Census mining category is 3.5% 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.
Johnson County, Wyoming · Population 8,602
3.5%
Mining share of county employment
$63,905
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
2016 Q2 48 0 0 0.0
2016 Q1 91 0 0 0.0
2015 Q4 20 0 0 0.0
2015 Q3 113 0 0 0.0
2015 Q2 84 0 0 0.0
2015 Q1 20 0 0 0.0
2014 Q4 23 0 0 0.0
2014 Q3 131 0 0 0.0
Show 58 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2014 Q2 40 0 0 0.0
2014 Q1 47 0 0 0.0
2013 Q4 39 0 0 0.0
2013 Q3 162 0 0 0.0
2013 Q2 133 2 0 15037.6
2013 Q1 40 0 0 0.0
2012 Q4 53 0 0 0.0
2012 Q3 74 0 0 0.0
2012 Q2 81 0 0 0.0
2012 Q1 105 0 0 0.0
2011 Q4 149 0 0 0.0
2011 Q3 181 0 0 0.0
2011 Q2 53 1 0 18867.9
2011 Q1 18 0 0 0.0
2010 Q4 31 0 0 0.0
2010 Q3 34 0 0 0.0
2010 Q2 240 0 0 0.0
2010 Q1 223 0 0 0.0
2009 Q4 190 1 0 5263.2
2009 Q3 385 0 0 0.0
2009 Q2 398 0 0 0.0
2009 Q1 128 0 0 0.0
2008 Q4 230 0 0 0.0
2008 Q3 135 0 0 0.0
2008 Q2 264 2 0 7575.8
2008 Q1 129 0 0 0.0
2007 Q4 382 0 0 0.0
2007 Q3 496 0 0 0.0
2007 Q2 445 0 0 0.0
2007 Q1 296 0 0 0.0
2006 Q4 309 0 0 0.0
2006 Q3 391 0 0 0.0
2006 Q2 365 0 0 0.0
2006 Q1 270 0 0 0.0
2005 Q4 351 0 0 0.0
2005 Q3 484 0 0 0.0
2005 Q2 250 0 0 0.0
2005 Q1 272 0 0 0.0
2004 Q4 254 0 0 0.0
2004 Q3 252 0 0 0.0
2004 Q2 269 0 0 0.0
2004 Q1 222 0 0 0.0
2003 Q4 217 0 0 0.0
2003 Q3 205 0 0 0.0
2003 Q2 171 0 0 0.0
2003 Q1 95 0 0 0.0
2002 Q4 206 0 0 0.0
2002 Q3 123 0 0 0.0
2002 Q2 183 0 0 0.0
2002 Q1 55 0 0 0.0
2001 Q4 63 0 0 0.0
2001 Q3 95 0 0 0.0
2001 Q2 143 0 0 0.0
2001 Q1 51 0 0 0.0
2000 Q4 94 0 0 0.0
2000 Q3 81 0 0 0.0
2000 Q2 139 0 0 0.0
2000 Q1 195 0 0 0.0

No reportable incidents on file.

MSHA has no recorded reportable accidents for this mine in the current dataset. New reports appear here within a week of being filed.