Mining Incidents

Portable Cheifton/Pegson: 4 MSHA citations Metal/Non-Metal

Nevada Building Supply LLC · Surface
Winnemucca, Humboldt County, NV  ·  Abandoned
MSHA Mine ID: 2602719

Portable Cheifton/Pegson has $484 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 2014
4
citations
0
significant & substantial
$484
proposed penalties
$484
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2012
18
inspections on record
122
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: 122 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 Cheifton/Pegson has $484 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.
$484
proposed penalties
$484
current assessed
$484
paid to date
$0
outstanding
4 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2022-05-10.
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
0.0%
high negligence or reckless
0.0%
reasonably likely or greater
50.0%
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: 2018-01-17, 8 years ago
0%
of limit-tested samples over the exposure limit
2
samples
1
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz1
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (2)
Date Contaminant Concentration Limit Conc / limit Occupation
2018-01-17 Unlisted Particulate, respirable, <1% Qtz 0.16 Scraper Operator
2015-04-29 Quartz, respirable, >1% Qtz 0.25 0.45 0.56 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.
Ownership history
  1. N.D. Sweeney Construction 2012 to 2023
  2. Nevada Building Supply LLC 2023 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2023 0
2022 2
2021 2
2020 1
2019 1
2018 1
2017 1
2016 1
2015 1
2014 2
2013 1
2012 1
Source: MSHA quarterly employment and production, updated weekly.

Portable Cheifton/Pegson sits in Humboldt County, Nevada, where the Census mining category is 20.1% 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.
Humboldt County, Nevada · Population 17,299
20.1%
Mining share of county employment
$79,946
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
2023 Q4 0 0 0
2023 Q3 0 0 0
2023 Q2 0 0 0
2023 Q1 0 0 0
2022 Q4 37 0 0 0.0
2022 Q3 108 0 0 0.0
2022 Q2 159 2 0 12578.6
2022 Q1 102 0 0 0.0
Show 37 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2021 Q4 122 0 0 0.0
2021 Q3 167 0 0 0.0
2021 Q2 374 0 0 0.0
2021 Q1 171 0 0 0.0
2020 Q4 75 0 0 0.0
2020 Q3 240 0 0 0.0
2020 Q1 113 0 0 0.0
2019 Q4 173 0 0 0.0
2019 Q3 128 0 0 0.0
2019 Q2 277 0 0 0.0
2019 Q1 94 0 0 0.0
2018 Q4 175 0 0 0.0
2018 Q3 300 0 0 0.0
2018 Q2 300 0 0 0.0
2018 Q1 150 1 0 6666.7
2017 Q4 180 0 0 0.0
2017 Q3 184 0 0 0.0
2017 Q2 350 0 0 0.0
2017 Q1 230 0 0 0.0
2016 Q4 110 0 0 0.0
2016 Q3 153 0 0 0.0
2016 Q2 252 0 0 0.0
2016 Q1 357 0 0 0.0
2015 Q4 90 0 0 0.0
2015 Q3 188 0 0 0.0
2015 Q2 298 0 0 0.0
2015 Q1 250 0 0 0.0
2014 Q4 250 0 0 0.0
2014 Q3 387 0 0 0.0
2014 Q2 253 1 0 3952.6
2014 Q1 1,160 0 0 0.0
2013 Q4 170 0 0 0.0
2013 Q3 180 0 0 0.0
2013 Q2 498 0 0 0.0
2013 Q1 164 0 0 0.0
2012 Q4 225 0 0 0.0
2012 Q3 200 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.