Mining Incidents

Johnson Cnty Road & Bridge Ptble Screen: 7 MSHA citations Metal/Non-Metal

Johnson County Road & Bridge · Surface
Controlled by Johnson County-WY
buffalo, Johnson County, WY  ·  Abandoned
MSHA Mine ID: 4801237

Johnson Cnty Road & Bridge Ptble Screen has $548 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 2003
7
citations
1
significant & substantial
$548
proposed penalties
$548
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2002
8
inspections on record
79
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: 79 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Johnson Cnty Road & Bridge Ptble Screen has $548 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.
$548
proposed penalties
$548
current assessed
$548
paid to date
$0
outstanding
7 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2010-03-29.
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.
14.3%
significant & substantial
0.0%
high negligence or reckless
14.3%
reasonably likely or greater
14.3%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 0.0% low, 100.0% moderate, 0.0% 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: 2006-04-04, 20 years ago
1
samples
0
limit-tested
Most sampled contaminants
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Occupation
2006-04-04 Unlisted Particulate, respirable, <1% Qtz 0.18 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. Johnson County Road & Bridge 1979 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2018 1
2017 1
2016 1
2008 2
2007 2
2006 3
2005 1
2004 7
2003 9
2002 9
Source: MSHA quarterly employment and production, updated weekly.

Johnson Cnty Road & Bridge Ptble Screen 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
2018 Q1 1 0 0 0.0
2017 Q4 1 0 0 0.0
2017 Q3 1 0 0 0.0
2017 Q2 1 0 0 0.0
2017 Q1 1 0 0 0.0
2016 Q4 1 0 0 0.0
2008 Q4 1 0 0 0.0
2008 Q3 64 0 0 0.0
Show 26 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2008 Q2 135 0 0 0.0
2008 Q1 77 2 1 25974.0
2007 Q4 1 0 0 0.0
2007 Q3 17 0 0 0.0
2007 Q2 1 0 0 0.0
2007 Q1 1 0 0 0.0
2006 Q4 180 0 0 0.0
2006 Q3 1 0 0 0.0
2006 Q2 54 0 0 0.0
2006 Q1 41 0 0 0.0
2005 Q4 0 0 0
2005 Q3 22 0 0 0.0
2005 Q2 112 0 0 0.0
2005 Q1 314 1 0 3184.7
2004 Q4 75 1 0 13333.3
2004 Q3 0 0 0
2004 Q2 4,498 0 0 0.0
2004 Q1 1,296 0 0 0.0
2003 Q4 973 2 0 2055.5
2003 Q3 481 0 0 0.0
2003 Q2 645 0 0 0.0
2003 Q1 4,161 0 0 0.0
2002 Q4 4,835 0 0 0.0
2002 Q3 520 0 0 0.0
2002 Q2 4,315 0 0 0.0
2002 Q1 4,680 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.