Portable Crusher #2 (P-450) has $3K in proposed MSHA penalties and $151 outstanding across 1 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
8
Years on record
1984–2026
Latest incident
May 2026
Compliance record
MSHA citations since 2021
17
citations
2
significant & substantial
$2,561
proposed penalties
$2,057
paid to date
80% of proposed penalties paid to date, a $504 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: 180 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 Crusher #2 (P-450) has $3K in proposed MSHA penalties and $151 outstanding across 1 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.
$3K
proposed penalties
$2K
current assessed
$2K
paid to date
$151
outstanding
16 assessments are final orders; 1 contested dockets.
Of $504 in penalties contested before the Commission, $151 was upheld in final decisions.
As of the most recent assessment on 2026-05-18.
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.
When citations were contested
ⓘContesting a citation before the Federal Mine Safety and Health Review Commission is a lawful right. These figures state the public outcomes of that process, from MSHA's Contested Violations file.
1citations taken to the federal commission · 6% of citations on record
Settled
1 · 100%
0%
S&S designation survived the contest
ⓘCounts a Significant & Substantial citation as surviving when a settlement or judge's decision kept the designation, or the contest was dismissed or defaulted so the citation stands as issued. Vacated and withdrawn citations, and settlements that removed the designation, count against.
of 1 decided S&S contests · industry: 79%
70%
Penalty reduction in decided contests
$504 proposed, $151 after decisions · industry: 39%
Source: MSHA Contested Violations file (public record), updated weekly. A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record. Latest contest filed 2025-05-28.
Contested penalties
ⓘA reduction or dismissal at the Commission is a lawful outcome of contesting a proposed penalty. Figures are the proposed amount and the amount upheld in the docket's decision.
Largest penalties this mine contested before the Federal Mine Safety and Health Review Commission, with the outcome on record.
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: 2026-05-27
2
samples
0
limit-tested
Most sampled contaminants
Respirable dust, <.1mg2
Show the individual readings (2)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2026-05-27
Respirable dust, <.1mg
0
Mucking Mach. Operator
2026-05-27
Respirable dust, <.1mg
0
Miner, Stope
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 Crusher #2 (P-450) recorded 0.00 reportable injury cases per 100 full-time workers in 2024.
Injury rate, 2024
ⓘ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 1.77 and the all-US-mining average was 2.08 cases per 100 workers.
In Nevada, metal and nonmetal mining averaged 1.19 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
2024 *
0.00
0.00
0.000
2023 *
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.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
26
2025
21
2024
16
2023
13
2022
9
2021
7
2020
13
Source: MSHA quarterly employment and production, updated weekly.
Portable Crusher #2 (P-450) 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
At approximately 12:35 PM, a fire occurred at the TR Bolinder Crusher. Prior to the incident, maintenance activities were being performed on the guarding for the cone feed, during which a torch was used to clear bolt holes for installation of the guard. Upon completion of the task, three bolinder employees left the work area and returned to their trailer for a scheduled break.
1993 · 2 incidents
August 17, 1993UT · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDTOOLS (NONPOWERED)
THE EMPLOYEE WAS USING A CABLE WENCH TO LOWER A PREP SCREEN. THE PRAWL LOCK RELEASED, JERKING THE WENCH HANDLE OUT OF THE EMPLOYEES HAND, ROTATING COUNTER CLOCKWIDE AND SLAPPING THE BACK OF HI S LEFT HAND IN BACK OF THE KNUCKLES.
May 27, 1993UT · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
LEFT INQUINAL HERNIA AND RIGHT INGUINAL BULGE. HE WAS PULLING UP ON A 5 FT. PRYBAR, TRYING TO HELP THE HYDRAULIC LIFTING RAM TO LIFT THE LID OFF OF A BARMAC CRUSHER. THE HYDRUALIC LIFTING CYLI NDER WAS NOT WORKING PROPERLY.
EE AND OTHER EMPLOYEE WERE LIFTING A DECK SCREEN OUT OF THE FRONT END LOADER BUCKET, THE SCREEN WAS CAUGHT ON A METAL FLANGE ATTACHED TO THE EL-JAY SCREENING PLANT AND EE JERKED ON IT. WHEN TH E SCREEN CAME LOOSE, EE LOST HIS GRIP AND THE SCREEN FELL ON HIS LEFT FOOT. EE HAS A LACERATION AND A FRACTURE TO THE THIRD DIGIT OF HIS LEFT FOOT.
February 19, 1992UT · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDLING OF MATERIALS
THE EMPLOYEE WAS RELOCATING A 4/4 UNDER A CONCRETE BARRIER FORM.THE BOTTOM OF THE FORM HAD TO BE UNPINNED.THE BOTTOM PLATE FELL SMASHING THE RIGHT INDEX FINGER.
February 15, 1992UT · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanHANDTOOLS (NONPOWERED)