Mining Incidents

TENACITY PERLITE: 107 MSHA citations Metal/Non-Metal

Controlled by Dennis Sonnenberg
NORTH LAS VEGAS, Lincoln County, NV  ·  Intermittent
MSHA Mine ID: 2600901

TENACITY PERLITE has $21K in proposed MSHA penalties and $0 outstanding across 1 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
3
Years on record
1997–2014
Latest incident
Jun 2014
Compliance record
MSHA citations since 2000
107
citations
28
significant & substantial
$21,050
proposed penalties
$21,050
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
57
inspections on record
965
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: 965 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

TENACITY PERLITE has $21K in proposed MSHA penalties and $0 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.
$21K
proposed penalties
$21K
current assessed
$21K
paid to date
$0
outstanding
107 assessments are final orders; 1 contested dockets.
Of $200 in penalties contested before the Commission, $200 was upheld in final decisions.
As of the most recent assessment on 2025-03-11.
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.
26.2%
significant & substantial
8.4%
high negligence or reckless
25.5%
reasonably likely or greater
37.4%
permanently disabling or fatal if injury occurs
Negligence coding: 0.9% none, 11.2% low, 79.4% moderate, 8.4% high, 0.0% reckless.
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.
2 citations taken to the federal commission · 2% of citations on record
  • Settled 2 · 100%
0%
Penalty reduction in decided contests
$200 proposed, $200 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 2009-05-20.
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.
Docket Decision Judge Year Proposed / upheld
WEST 2009-887M Settlement 2010 $200 → $200
Source: FMSHRC civil penalty dockets and decisions (public record), 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: 2025-03-11
0%
of limit-tested samples over the exposure limit
10
samples
2
limit-tested
Most sampled contaminants
  • Unlisted Particulate, respirable, <1% Qtz5
  • Quartz, respirable, >1% Qtz2
  • Respirable dust, <.1mg2
  • Unlisted Particulate, total, <1% Qtz1
Show the individual readings (10)
Date Contaminant Concentration Limit Conc / limit Occupation
2025-03-11 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-02-17 Unlisted Particulate, respirable, <1% Qtz 0.77 Crusher Oper/Worker
2015-03-12 Unlisted Particulate, respirable, <1% Qtz 0.54 Bagging Operator
2013-02-07 Quartz, respirable, >1% Qtz 0.12 1.25 0.10 Crusher Oper/Worker
2011-08-04 Unlisted Particulate, total, <1% Qtz 40.25 Bagging Operator
2011-01-11 Respirable dust, <.1mg 0 Crusher Oper/Worker
2010-01-12 Quartz, respirable, >1% Qtz 0.26 2.07 0.13 Bagging Operator
2005-12-06 Unlisted Particulate, respirable, <1% Qtz 0.13 Bagging Operator
2003-05-07 Unlisted Particulate, respirable, <1% Qtz 0.19 Bagging Operator
2003-05-07 Unlisted Particulate, respirable, <1% Qtz 0.22 Supervisor, Co. Official
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. Wilkin Mining & Trucking 1950 to 1980
  2. Wilkin Mining & Trucking Inc 1980 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 2
2025 2
2024 2
2023 2
2022 1
2021 2
2020 2
2019 2
2018 3
2017 8
2016 8
2015 8
2014 8
2013 9
2012 10
2011 11
2010 9
2009 7
2008 7
2007 8
2006 8
2005 9
2004 8
2003 9
2002 8
2001 6
2000 8
Source: MSHA quarterly employment and production, updated weekly.

TENACITY PERLITE sits in Lincoln County, Nevada, where the Census mining category is 0.0% 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.
Lincoln County, Nevada · Population 4,452
0.0%
Mining share of county employment
$69,496
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 192 0 0 0.0
2026 Q1 252 0 0 0.0
2025 Q4 449 0 0 0.0
2025 Q3 16 0 0 0.0
2025 Q2 240 0 0 0.0
2025 Q1 240 1 0 4166.7
2024 Q4 227 0 0 0.0
2024 Q3 40 1 0 25000.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 460 0 0 0.0
2024 Q1 460 0 0 0.0
2023 Q4 460 0 0 0.0
2023 Q3 473 0 0 0.0
2023 Q2 416 0 0 0.0
2023 Q1 483 0 0 0.0
2022 Q4 0 0 0
2022 Q3 0 0 0
2022 Q2 560 0 0 0.0
2022 Q1 911 1 0 1097.7
2021 Q4 901 0 0 0.0
2021 Q3 897 0 0 0.0
2021 Q2 983 2 1 2034.6
2021 Q1 754 3 0 3978.8
2020 Q4 372 0 0 0.0
2020 Q3 579 1 0 1727.1
2020 Q2 599 0 0 0.0
2020 Q1 551 0 0 0.0
2019 Q4 568 0 0 0.0
2019 Q3 510 0 0 0.0
2019 Q2 649 0 0 0.0
2019 Q1 589 2 0 3395.6
2018 Q4 588 0 0 0.0
2018 Q3 517 0 0 0.0
2018 Q2 852 0 0 0.0
2018 Q1 2,032 5 2 2460.6
2017 Q4 2,638 0 0 0.0
2017 Q3 3,281 2 1 609.6
2017 Q2 4,573 0 0 0.0
2017 Q1 3,619 2 0 552.6
2016 Q4 3,112 0 0 0.0
2016 Q3 4,458 3 1 672.9
2016 Q2 3,434 0 0 0.0
2016 Q1 2,869 0 0 0.0
2015 Q4 4,081 0 0 0.0
2015 Q3 4,191 2 1 477.2
2015 Q2 4,135 6 4 1451.0
2015 Q1 3,116 3 0 962.8
2014 Q4 3,659 0 0 0.0
2014 Q3 3,043 0 0 0.0
2014 Q2 3,858 0 0 0.0
2014 Q1 3,961 0 0 0.0
2013 Q4 3,245 0 0 0.0
2013 Q3 3,323 0 0 0.0
2013 Q2 5,059 4 3 790.7
2013 Q1 3,661 7 0 1912.0
2012 Q4 3,589 0 0 0.0
2012 Q3 3,610 3 1 831.0
2012 Q2 4,421 0 0 0.0
2012 Q1 4,126 0 0 0.0
2011 Q4 4,115 0 0 0.0
2011 Q3 4,103 2 0 487.4
2011 Q2 4,402 0 0 0.0
2011 Q1 4,262 3 2 703.9
2010 Q4 4,194 0 0 0.0
2010 Q3 4,471 6 1 1342.0
2010 Q2 3,227 0 0 0.0
2010 Q1 3,191 2 0 626.8
2009 Q4 1,780 0 0 0.0
2009 Q3 2,253 0 0 0.0
2009 Q2 2,348 0 0 0.0
2009 Q1 2,598 5 0 1924.6
2008 Q4 2,119 0 0 0.0
2008 Q3 2,905 2 1 688.5
2008 Q2 1,981 1 0 504.8
2008 Q1 3,316 0 0 0.0
2007 Q4 2,714 1 0 368.5
2007 Q3 2,387 4 0 1675.7
2007 Q2 3,256 0 0 0.0
2007 Q1 3,029 4 0 1320.6
2006 Q4 3,641 0 0 0.0
2006 Q3 2,198 0 0 0.0
2006 Q2 2,421 0 0 0.0
2006 Q1 2,557 0 0 0.0
2005 Q4 2,856 0 0 0.0
2005 Q3 1,924 0 0 0.0
2005 Q2 2,845 3 2 1054.5
2005 Q1 2,390 2 0 836.8
2004 Q4 2,173 0 0 0.0
2004 Q3 2,655 3 1 1129.9
2004 Q2 3,010 0 0 0.0
2004 Q1 2,433 5 3 2055.1
2003 Q4 3,184 0 0 0.0
2003 Q3 3,624 0 0 0.0
2003 Q2 3,243 4 2 1233.4
2003 Q1 3,540 0 0 0.0
2002 Q4 3,335 7 1 2099.0
2002 Q3 3,319 0 0 0.0
2002 Q2 2,961 0 0 0.0
2002 Q1 2,564 0 0 0.0
2001 Q4 2,403 2 1 832.3
2001 Q3 2,599 0 0 0.0
2001 Q2 2,332 0 0 0.0
2001 Q1 2,999 2 0 666.9
2000 Q4 2,815 0 0 0.0
2000 Q3 2,741 0 0 0.0
2000 Q2 2,642 1 0 378.5
2000 Q1 3,096 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

2014 · 1 incident

June 16, 2014 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Wilkin Mining & Trucking Inc · Fall from ladders

Employee was in a hurry to get his task accomplished and misplaced his foot and fell a couple of feet to the left connecting forklift.

2001 · 1 incident

August 28, 2001 NV · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
Wilkin Mining & Trucking Inc · Fall to lower level, (Not Elsewhere Classified)

WORKER ON ROOF WITHOUT SAFETY EQUIPMENT, WINDY CONDITIONS. WORKER FELL FROM ROOF APPROX 17'. SUSTAINED BROKEN LEG, HIP, COLAR BONE & LACERATIONS.

1997 · 1 incident

January 8, 1997 NV · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
Wilkin Mining & Trucking Inc · Struck against a moving object

EMPLOYEE WAS DRIVING A DUMP TRUCK UP AN INCLIME TO DUMP HIS LOAD. TRUCK STALLED OUT, DRIVER SHIFTED IT INTO NEUTRAL ALLOWING THE TRUCK TO ROLL BACKWARDS AND HITTING ANOTHER PARKED TRUCK IN THE LOT. DRIVER STATED THAT THE BRAKES DIDN'T WORK. THE TRUCK BEING DRIVEN RECEIVED NO DAMAGE. THE PARKED TRUCK HAD MARKER LIGHT LENS BROKEN AND WAS SCRATCHED. DRIVER COMPLAINED OF SORE NECK