Mining Incidents

Crusher #4 Track Impactor: 69 MSHA citations Metal/Non-Metal

Controlled by CRH PLC
Huntington, Emery County, UT  ·  Abandoned
MSHA Mine ID: 4202158

Crusher #4 Track Impactor has $13K 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
3
Years on record
2004–2010
Latest incident
Aug 2010
Compliance record
MSHA citations since 2001
69
citations
14
significant & substantial
$12,501
proposed penalties
$12,501
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
41
inspections on record
566
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: 566 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

Crusher #4 Track Impactor has $13K 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.
$13K
proposed penalties
$13K
current assessed
$13K
paid to date
$0
outstanding
68 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-07-30.
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.
20.6%
significant & substantial
5.9%
high negligence or reckless
20.6%
reasonably likely or greater
73.5%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 5.9% low, 88.2% moderate, 5.9% 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: 2023-09-27
0%
of limit-tested samples over the exposure limit
22
samples
16
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz16
  • Respirable dust, <.1mg5
  • Unlisted Particulate, respirable, <1% Qtz1
Show the individual readings (22)
Date Contaminant Concentration Limit Conc / limit Occupation
2023-09-27 Respirable dust, <.1mg 0 Front-end Loader Operator
2023-09-27 Respirable dust, <.1mg 0 Front-end Loader Operator
2021-03-23 Quartz, respirable, >1% Qtz 0.13 0.49 0.27 Front-end Loader Operator
2021-03-23 Quartz, respirable, >1% Qtz 0.14 0.47 0.30 Crusher Oper/Worker
2016-10-12 Unlisted Particulate, respirable, <1% Qtz 0.21 Rotary Bucket Ex. Operator
2016-10-12 Respirable dust, <.1mg 0 Front-end Loader Operator
2011-02-08 Quartz, respirable, >1% Qtz 0.61 0.83 0.73 Crusher Oper/Worker
2011-02-08 Quartz, respirable, >1% Qtz 0.62 2.64 0.23 Front-end Loader Operator
2011-02-08 Quartz, respirable, >1% Qtz 0.4 0.74 0.54 Front-end Loader Operator
2005-03-31 Respirable dust, <.1mg 0 Front-end Loader Operator
2005-03-31 Quartz, respirable, >1% Qtz 0.19 1.31 0.15 Bulldozer Operator
2005-03-31 Respirable dust, <.1mg 0 Crusher Oper/Worker
2005-03-31 Quartz, respirable, >1% Qtz 0.18 1.17 0.15 Front-end Loader Operator
2003-07-10 Quartz, respirable, >1% Qtz 0.17 1.03 0.17 Bulldozer Operator
2003-07-10 Quartz, respirable, >1% Qtz 0.5 1.28 0.39 Front-end Loader Operator
2003-07-10 Quartz, respirable, >1% Qtz 0.27 1.45 0.19 Supervisor, Co. Official
2003-07-10 Quartz, respirable, >1% Qtz 0.21 1.2 0.18 Crusher Oper/Worker
2002-01-16 Quartz, respirable, >1% Qtz 0.26 1.1 0.24 Supervisor, Co. Official
2002-01-16 Quartz, respirable, >1% Qtz 0.13 0.64 0.20 Front-end Loader Operator
2002-01-16 Quartz, respirable, >1% Qtz 0.35 0.38 0.92 Bulldozer Operator
2002-01-16 Quartz, respirable, >1% Qtz 0.16 0.61 0.26 Crusher Oper/Worker
2002-01-16 Quartz, respirable, >1% Qtz 0.15 0.85 0.18 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. Nielson Construction Corp 1997 to 2016
  2. Staker & Parson Companies 2016 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2025 5
2024 10
2023 6
2022 9
2021 13
2020 2
2019 5
2018 6
2017 3
2016 2
2015 2
2014 1
2013 5
2012 6
2011 7
2010 6
2009 7
2008 13
2007 2
2006 7
2005 5
2004 7
2003 11
2002 5
2001 4
2000 2
Source: MSHA quarterly employment and production, updated weekly.

Crusher #4 Track Impactor sits in Emery County, Utah, where the Census mining category is 7.5% 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.
Emery County, Utah · Population 9,968
7.5%
Mining share of county employment
$69,956
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
2025 Q2 784 0 0 0.0
2025 Q1 909 0 0 0.0
2024 Q4 1,488 0 0 0.0
2024 Q3 1,682 2 0 1189.1
2024 Q2 1,442 0 0 0.0
2024 Q1 2,420 0 0 0.0
2023 Q4 710 0 0 0.0
2023 Q3 1,857 4 2 2154.0
Show 88 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q2 1,415 0 0 0.0
2023 Q1 0 0 0
2022 Q4 621 0 0 0.0
2022 Q3 1,165 0 0 0.0
2022 Q2 785 0 0 0.0
2022 Q1 1,342 0 0 0.0
2021 Q4 1,604 0 0 0.0
2021 Q3 2,413 0 0 0.0
2021 Q2 2,498 0 0 0.0
2021 Q1 1,199 3 0 2502.1
2020 Q4 624 0 0 0.0
2020 Q3 0 0 0
2020 Q2 0 0 0
2020 Q1 0 0 0
2019 Q4 344 0 0 0.0
2019 Q3 254 0 0 0.0
2019 Q2 672 0 0 0.0
2019 Q1 550 0 0 0.0
2018 Q4 180 0 0 0.0
2018 Q3 523 0 0 0.0
2018 Q2 967 0 0 0.0
2017 Q3 0 0 0
2017 Q2 330 3 1 9090.9
2017 Q1 247 0 0 0.0
2016 Q4 804 3 1 3731.3
2016 Q3 69 0 0 0.0
2016 Q1 0 0 0
2015 Q4 211 0 0 0.0
2015 Q3 618 0 0 0.0
2015 Q2 900 2 1 2222.2
2015 Q1 267 0 0 0.0
2014 Q1 74 0 0 0.0
2013 Q4 0 0 0
2013 Q3 718 0 0 0.0
2013 Q2 2,016 0 0 0.0
2013 Q1 2,465 0 0 0.0
2012 Q4 1,229 0 0 0.0
2012 Q3 1,024 0 0 0.0
2012 Q2 2,713 0 0 0.0
2012 Q1 2,333 0 0 0.0
2011 Q4 1,372 7 1 5102.0
2011 Q3 5,310 0 0 0.0
2011 Q2 4,364 0 0 0.0
2011 Q1 4,599 5 2 1087.2
2010 Q4 3,315 0 0 0.0
2010 Q3 6,952 0 0 0.0
2010 Q2 4,701 1 0 212.7
2010 Q1 3,236 0 0 0.0
2009 Q4 3,766 0 0 0.0
2009 Q3 4,829 0 0 0.0
2009 Q2 3,207 0 0 0.0
2009 Q1 4,293 3 0 698.8
2008 Q4 3,111 0 0 0.0
2008 Q3 3,097 0 0 0.0
2008 Q2 4,391 0 0 0.0
2008 Q1 3,304 0 0 0.0
2007 Q4 3,151 0 0 0.0
2007 Q3 0 0 0
2007 Q2 0 0 0
2007 Q1 0 0 0
2006 Q4 2,361 0 0 0.0
2006 Q3 3,025 0 0 0.0
2006 Q2 2,944 0 0 0.0
2006 Q1 1,976 5 0 2530.4
2005 Q4 0 0 0
2005 Q3 1,102 0 0 0.0
2005 Q2 2,378 0 0 0.0
2005 Q1 2,384 6 0 2516.8
2004 Q4 2,558 0 0 0.0
2004 Q3 3,878 1 0 257.9
2004 Q2 3,641 5 0 1373.2
2004 Q1 1,540 0 0 0.0
2003 Q4 2,351 0 0 0.0
2003 Q3 3,835 1 0 260.8
2003 Q2 2,619 0 0 0.0
2003 Q1 2,462 0 0 0.0
2002 Q4 376 0 0 0.0
2002 Q3 1,487 4 1 2690.0
2002 Q2 1,735 3 0 1729.1
2002 Q1 2,001 6 2 2998.5
2001 Q4 1,317 0 0 0.0
2001 Q3 1,380 5 3 3623.2
2001 Q2 0 0 0
2001 Q1 2,172 0 0 0.0
2000 Q4 895 0 0 0.0
2000 Q3 0 0 0
2000 Q2 66 0 0 0.0
2000 Q1 318 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

3 on file

2010 · 1 incident

August 31, 2010 UT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Nielson Construction Corp · Struck by... (Not Elsewhere Classified)

Operator was moving screens by hand into loader bucket to relocate. Screen slipped and his fingers became caught between bucket and screen. Gloves caught on jagged edge of screen material and little and middle finger of left hand were cut, requiring 9 stitches.

2007 · 1 incident

November 21, 2007 UT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDTOOLS (NONPOWERED)
Nielson Construction Corp · Struck by flying object

Changing counter balance in cone using cutting torch, hammering on counter balance, a piece of metal flew into his eye.

2004 · 1 incident

June 7, 2004 UT · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
Nielson Construction Corp · Fall from machine

Operator failed to properly park rock truck and did not engage park brake before exiting vehicle. He fell while attempting to urinate from top platform of truck.