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Portable 1: 50 MSHA citations Metal/Non-Metal

Golconda, Humboldt County, NV  ·  Active
MSHA Mine ID: 4202399

Portable 1 has $7K 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
1
Years on record
2026
Latest incident
Aug 2026
Compliance record
MSHA citations since 2006
50
citations
11
significant & substantial
$6,714
proposed penalties
$6,714
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See Bolinder Resources, LLC's full MSHA compliance history →
Inspection activity
MSHA inspections since 2005
32
inspections on record
341
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: 341 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 $7K 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.
$7K
proposed penalties
$7K
current assessed
$7K
paid to date
$0
outstanding
49 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-06-04.
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.
22.0%
significant & substantial
4.0%
high negligence or reckless
22.0%
reasonably likely or greater
74.0%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 4.0% low, 92.0% moderate, 4.0% 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: 2022-12-21, 3 years ago
22%
of limit-tested samples over the exposure limit
9
samples
9
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz92 over
Show the individual readings (9)
Date Contaminant Concentration Limit Conc / limit Occupation
2005-04-13 Quartz, respirable, >1% Qtz 0.3 0.2 1.50 Front-end Loader Operator
2005-04-13 Quartz, respirable, >1% Qtz 0.75 0.22 3.41 Crusher Oper/Worker
2022-12-21 Quartz, respirable, >1% Qtz 0.21 0.43 0.49 Laborer, Bullgang
2022-12-21 Quartz, respirable, >1% Qtz 0.61 0.81 0.75 Crusher Oper/Worker
2022-12-21 Quartz, respirable, >1% Qtz 0.14 0.4 0.35 Front-end Loader Operator
2015-07-16 Quartz, respirable, >1% Qtz 0.28 1.32 0.21 Laborer, Bullgang
2015-07-16 Quartz, respirable, >1% Qtz 0.19 0.36 0.53 Crusher Oper/Worker
2015-07-16 Quartz, respirable, >1% Qtz 0.28 0.3 0.93 Front-end Loader Operator
2005-04-13 Quartz, respirable, >1% Qtz 0.21 0.24 0.88 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.

Portable 1 recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
ⓘ This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
No reportable injury cases in any year shown. Employee-hours were reported in each of those years, so these are true zeros rather than missing data. Citations, listed in the compliance record above, are inspector-found violations and are counted separately from worker injuries.
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Nevada, metal and nonmetal mining averaged 1.25 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2025 * 0.00 0.00 0.000
2024 * 0.00 0.00 0.000
2023 * 0.00 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2019 * 0.00 0.00 0.000
2005 * 0.00 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. Bolinder Company Inc 2005 to 2014
  2. Bolinder Resources, LLC 2014 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 25
2025 23
2024 16
2023 11
2022 12
2021 15
2020 7
2019 15
2018 9
2017 6
2016 4
2015 3
2014 5
2009 2
2008 11
2007 8
2006 10
2005 18
Source: MSHA quarterly employment and production, updated weekly.

Portable 1 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
2026 Q2 4,252 0 0 0.0
2026 Q1 4,783 0 0 0.0
2025 Q4 7,288 0 0 0.0
2025 Q3 8,695 0 0 0.0
2025 Q2 6,587 1 0 151.8
2025 Q1 4,951 0 0 0.0
2024 Q4 4,618 0 0 0.0
2024 Q3 6,652 0 0 0.0
Show 56 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 5,382 0 0 0.0
2024 Q1 4,177 0 0 0.0
2023 Q4 3,572 0 0 0.0
2023 Q3 3,267 0 0 0.0
2023 Q2 6,566 2 0 304.6
2023 Q1 7,805 0 0 0.0
2022 Q4 4,756 2 0 420.5
2022 Q3 3,492 0 0 0.0
2022 Q2 7,662 0 0 0.0
2022 Q1 8,527 0 0 0.0
2021 Q4 7,455 0 0 0.0
2021 Q3 5,707 0 0 0.0
2021 Q2 7,881 8 0 1015.1
2021 Q1 7,902 0 0 0.0
2020 Q4 1,670 0 0 0.0
2020 Q3 1,989 0 0 0.0
2019 Q4 1,885 0 0 0.0
2019 Q3 8,718 2 0 229.4
2019 Q2 9,120 0 0 0.0
2019 Q1 8,922 4 1 448.3
2018 Q4 5,413 0 0 0.0
2018 Q3 5,559 0 0 0.0
2018 Q2 4,047 1 0 247.1
2018 Q1 3,956 3 2 758.3
2017 Q4 1,793 0 0 0.0
2017 Q3 3,823 0 0 0.0
2017 Q2 3,669 1 0 272.6
2017 Q1 2,120 0 0 0.0
2016 Q4 1,462 0 0 0.0
2016 Q3 2,559 2 1 781.6
2016 Q2 3,668 0 0 0.0
2016 Q1 1,652 0 0 0.0
2015 Q4 2,782 0 0 0.0
2015 Q3 3,218 8 1 2486.0
2015 Q2 1,030 0 0 0.0
2015 Q1 2,512 0 0 0.0
2014 Q4 3,459 0 0 0.0
2014 Q3 3,248 0 0 0.0
2014 Q2 1,041 0 0 0.0
2009 Q2 0 0 0
2009 Q1 1,952 0 0 0.0
2008 Q4 658 0 0 0.0
2008 Q3 5,322 0 0 0.0
2008 Q2 7,327 5 4 682.4
2008 Q1 6,597 0 0 0.0
2007 Q4 3,132 0 0 0.0
2007 Q3 3,190 0 0 0.0
2007 Q2 5,485 3 1 546.9
2007 Q1 4,528 0 0 0.0
2006 Q4 5,108 0 0 0.0
2006 Q2 4,145 0 0 0.0
2006 Q1 4,586 0 0 0.0
2005 Q4 7,411 0 0 0.0
2005 Q3 8,047 0 0 0.0
2005 Q2 4,306 0 0 0.0
2005 Q1 3,320 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

1 on file

2026 · 1 incident

August 24, 2026 NV · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker MACHINERY
Bolinder Resources, LLC · Struck by falling object

Miner was reaching under a suspended load when it fell on their fingers.