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Crusher #7: 84 MSHA citations Metal/Non-Metal

JTL GROUP,INC. · Surface
Controlled by Knife River Corporation
Casper, Natrona County, WY  ·  Intermittent
MSHA Mine ID: 4801598

Crusher #7 has $17K 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
15
Years on record
2005–2021
Latest incident
Nov 2021
Compliance record
MSHA citations since 2004
84
citations
20
significant & substantial
$17,432
proposed penalties
$17,432
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
See JTL GROUP,INC.'s full MSHA compliance history →
Inspection activity
MSHA inspections since 2001
47
inspections on record
684
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: 684 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 #7 has $17K 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.
$17K
proposed penalties
$17K
current assessed
$17K
paid to date
$0
outstanding
83 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 2026-01-20.
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.
23.8%
significant & substantial
16.7%
high negligence or reckless
23.8%
reasonably likely or greater
47.6%
permanently disabling or fatal if injury occurs
Negligence coding: 0.0% none, 19.0% low, 64.3% moderate, 16.7% 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 2011-10-21.
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 2012-82M Settlement Lesnick 2012 $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: 2025-08-28
20%
of limit-tested samples over the exposure limit
19
samples
15
limit-tested
Most sampled contaminants
  • Quartz, respirable, >1% Qtz153 over
  • Respirable dust, <.1mg4
Show the individual readings (19)
Date Contaminant Concentration Limit Conc / limit Occupation
2009-06-23 Quartz, respirable, >1% Qtz 0.82 0.35 2.34 Front-end Loader Operator
2009-06-23 Quartz, respirable, >1% Qtz 0.55 0.24 2.29 Bobcat Operator
2006-10-05 Quartz, respirable, >1% Qtz 2.05 2.05 1.00 Crusher Oper/Worker
2025-08-28 Respirable dust, <.1mg 0 Crusher Oper/Worker
2025-08-28 Respirable dust, <.1mg 0 Bulldozer Operator
2025-08-28 Quartz, respirable, >1% Qtz 0.22 1.15 0.19 Laborer, Bullgang
2025-08-28 Respirable dust, <.1mg 0 Front-end Loader Operator
2020-10-21 Quartz, respirable, >1% Qtz 0.16 0.5 0.32 Bulldozer Operator
2020-10-21 Quartz, respirable, >1% Qtz 0.32 0.57 0.56 Mechanic
2020-10-21 Quartz, respirable, >1% Qtz 0.28 0.57 0.49 Crusher Oper/Worker
2020-10-21 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-04-24 Quartz, respirable, >1% Qtz 0.67 1.18 0.57 Bobcat Operator
2011-01-26 Quartz, respirable, >1% Qtz 1.53 1.6 0.96 Bobcat Operator
2009-06-23 Quartz, respirable, >1% Qtz 0.53 0.93 0.57 Bulldozer Operator
2008-01-24 Quartz, respirable, >1% Qtz 0.14 0.93 0.15 Laborer, Bullgang
2006-10-05 Quartz, respirable, >1% Qtz 1.27 1.35 0.94 Laborer, Bullgang
2005-01-26 Quartz, respirable, >1% Qtz 0.49 0.76 0.64 Cleanup Man
2005-01-26 Quartz, respirable, >1% Qtz 0.39 1.74 0.22 Front-end Loader Operator
2005-01-26 Quartz, respirable, >1% Qtz 0.72 0.82 0.88 Crusher Oper/Worker

Area samples (mill and shop air)

Last sampled: 2017-06-14, 9 years ago
1
samples
Show the individual readings (1)
Date Contaminant Concentration Limit Conc / limit Area sampled
2017-06-14 Quartz, respirable, >1% Qtz 0.6 SF ORE PROCESSING
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. Rissler & McMurry Co 2002 to 2004
  2. McMurry Ready Mix 2004 to 2020
  3. JTL GROUP,INC. 2020 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 12
2025 17
2024 12
2023 14
2022 11
2021 12
2020 8
2019 6
2018 6
2017 3
2016 1
2015 0
2014 12
2013 7
2012 8
2011 7
2010 6
2009 6
2008 4
2007 6
2006 7
2005 5
2004 7
2003 9
2002 8
2001 10
Source: MSHA quarterly employment and production, updated weekly.

Crusher #7 sits in Natrona County, Wyoming, where the Census mining category is 6.5% 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.
Natrona County, Wyoming · Population 79,735
6.5%
Mining share of county employment
$71,247
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 3,071 0 0 0.0
2026 Q1 1,624 1 0 615.8
2025 Q4 3,120 0 0 0.0
2025 Q3 5,287 0 0 0.0
2025 Q2 6,480 0 0 0.0
2025 Q1 3,257 0 0 0.0
2024 Q4 5,363 2 0 372.9
2024 Q3 4,462 0 0 0.0
Show 85 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 4,586 2 2 436.1
2024 Q1 4,054 0 0 0.0
2023 Q4 3,862 0 0 0.0
2023 Q3 6,184 2 0 323.4
2023 Q2 3,873 0 0 0.0
2023 Q1 3,990 2 0 501.3
2022 Q4 133 0 0 0.0
2022 Q3 3,593 6 3 1669.9
2022 Q2 4,587 0 0 0.0
2022 Q1 4,877 1 0 205.0
2021 Q4 4,428 0 0 0.0
2021 Q3 3,009 0 0 0.0
2021 Q2 6,221 1 0 160.7
2021 Q1 3,535 0 0 0.0
2020 Q4 3,880 11 3 2835.1
2020 Q3 3,287 1 0 304.2
2020 Q2 3,045 8 3 2627.3
2020 Q1 860 0 0 0.0
2019 Q4 4,624 0 0 0.0
2019 Q3 2,993 1 0 334.1
2019 Q2 1,534 0 0 0.0
2019 Q1 0 0 0
2018 Q4 1,554 0 0 0.0
2018 Q3 1,680 0 0 0.0
2018 Q2 1,997 0 0 0.0
2018 Q1 40 0 0 0.0
2017 Q4 0 0 0
2017 Q3 1,895 0 0 0.0
2017 Q2 712 1 0 1404.5
2016 Q4 16 0 0 0.0
2016 Q3 181 0 0 0.0
2015 Q2 0 0 0
2014 Q4 2,746 0 0 0.0
2014 Q3 8,469 0 0 0.0
2014 Q2 5,899 0 0 0.0
2014 Q1 0 0 0
2013 Q4 2,499 0 0 0.0
2013 Q3 2,678 0 0 0.0
2013 Q2 2,613 1 0 382.7
2013 Q1 1,981 0 0 0.0
2012 Q4 4,007 0 0 0.0
2012 Q3 4,285 0 0 0.0
2012 Q2 2,251 1 0 444.2
2012 Q1 1,464 0 0 0.0
2011 Q4 1,017 0 0 0.0
2011 Q3 2,764 3 0 1085.4
2011 Q2 3,243 0 0 0.0
2011 Q1 2,073 4 1 1929.6
2010 Q4 2,953 2 0 677.3
2010 Q3 2,628 0 0 0.0
2010 Q2 3,368 0 0 0.0
2010 Q1 3,236 2 1 618.0
2009 Q4 2,258 0 0 0.0
2009 Q3 5,069 2 2 394.6
2009 Q2 4,264 4 2 938.1
2009 Q1 3,223 0 0 0.0
2008 Q4 2,233 2 0 895.7
2008 Q3 3,535 0 0 0.0
2008 Q2 2,943 0 0 0.0
2008 Q1 2,173 6 0 2761.2
2007 Q4 3,967 0 0 0.0
2007 Q3 3,939 0 0 0.0
2007 Q2 3,320 0 0 0.0
2007 Q1 3,775 0 0 0.0
2006 Q4 3,302 3 0 908.5
2006 Q3 3,898 0 0 0.0
2006 Q2 5,658 0 0 0.0
2006 Q1 4,529 7 0 1545.6
2005 Q4 4,131 0 0 0.0
2005 Q3 4,031 0 0 0.0
2005 Q2 2,525 0 0 0.0
2005 Q1 1,978 1 0 505.6
2004 Q4 3,771 0 0 0.0
2004 Q3 3,700 0 0 0.0
2004 Q2 4,219 0 0 0.0
2004 Q1 3,867 4 1 1034.4
2003 Q4 2,754 0 0 0.0
2003 Q3 5,645 0 0 0.0
2003 Q2 6,312 0 0 0.0
2003 Q1 2,824 0 0 0.0
2002 Q4 1,745 0 0 0.0
2002 Q3 4,968 0 0 0.0
2002 Q2 2,708 0 0 0.0
2002 Q1 2,040 0 0 0.0
2001 Q4 3,125 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

15 on file

2021 · 2 incidents

November 22, 2021 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
JTL GROUP,INC. · Caught in, under or between a moving and a stationary object

EMPLOYEE INSPECTING BLOW BARS ON IMPACT,ELBOW STRUCK THE BREAKER PLATES AND ROTOR COTINUED TO ROLL. THIS CAUSED BREAK IN RIGHT WRIST.

March 30, 2021 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
JTL GROUP,INC. · Fall from machine

Placing cat walk on fuel tank to avoid falls while checking fuel levels. Cat walk slipped falling to ground before secured. Employee fell to ground with cat walk.

2020 · 1 incident

January 15, 2020 WY · Metal/Non-Metal electrician, lineman HANDLING OF MATERIALS
McMurry Ready Mix · Struck by... (Not Elsewhere Classified)

While helping Mechanic change out a bushing on dozer, bushing came out, pinching and cutting left index finger. Three stitches and glue was required.

2019 · 1 incident

December 2, 2019 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
McMurry Ready Mix · Fall to the walkway or working surface

Miner slipped on ice and fell walking to office at end of workday.

2014 · 1 incident

July 9, 2014 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
McMurry Ready Mix · Fall to the walkway or working surface

He fainted during a safety meeting and fell over on his face. He just came back from six days off, he said he was cutting wood on his days off and had not been getting enough sleep.

2012 · 1 incident

September 18, 2012 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer OTHER
McMurry Ready Mix · Bodily reaction, (Not Elsewhere Classified)

Miner did not report to work 9/19/2012. Called supervisor from hospital saying he broke/sprained ankle on 9/18/2012 while changing screens. Did not report injury day of occurrence. Sprained ankle was confirmed. Miner missed work on 9/19/2012. Returned to work on 9/20/2012. Suspicious as to being a work related injury.

2011 · 1 incident

September 6, 2011 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
McMurry Ready Mix · Caught in, under or between (Not Elsewhere Classified)

Injured miner had finger pinched by a chain. Appeared to be a minor cut/abrasion at the time of injury. Injury not healing as of 09/11/2011 so miner went to hospital ER.

2010 · 2 incidents

February 1, 2010 WY · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant SLIP OR FALL OF PERSON
McMurry Ready Mix · Fall down stairs

Miner slipped desending steps of lab trailer and fell on her back resulting in fractured ribs.

January 22, 2010 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
McMurry Ready Mix · Fall to the walkway or working surface

Miner slipped/fell on uneven ground. Fractured bone in hand used to brace the fall.

2009 · 1 incident

March 10, 2009 WY · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator SLIP OR FALL OF PERSON
McMurry Ready Mix · Fall from ladders

Miner caught the tread of his boot in a rung of an access ladder on an impact crusher while desending straining his lower back. 7000-1 not submitted. Have already been cited for this violation per Bill Coates, Green River, WY MSHA office on 06/22/2009.

2007 · 1 incident

September 5, 2007 WY · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler SLIP OR FALL OF PERSON
McMurry Ready Mix · Fall from ladders

Miner slipped off of 3rd step (from bottom) of ladder while ascending. Fell on left shoulder. Dislocated left shoulder. Ladder was not in disrepair or slippery.

2006 · 1 incident

August 14, 2006 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
McMurry Ready Mix · Absorption of radiations, caustics, toxic and noxious substances

While fueling Cat D9L dozer, the quick connect fuel valve on the dozer did not close when the service truck fueling hose was removed. Diesel sprayed on the employee and got in his right ear. The diesel chemically burned the employee's right ear canal. No permanent damge resulted.

2005 · 3 incidents

September 19, 2005 WY · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDLING OF MATERIALS
McMurry Ready Mix · Over-exertion in lifting objects

Employee lifted too much weight at one time causing a hernia in right groin. Employee notified his supervisor on 10/1/05 of the injury and that he would be going to the doctor. Paperwork not received in company safety office until 10/10/05. Steve Pilling at Green River, WY MSHA office notified of incident circumstances on 10/11/05.

August 2, 2005 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech OTHER
McMurry Ready Mix · Caught in, under or between a moving and a stationary object

While refueling equipment, employee had his hand in driver's door door jam of the fuel truck. The wind blew the door shut crushing his right hand. This accident was discovered on 10/11/05 as being not reported to MSHA in the required time limit during a self-audit for the 3rd quarter Form 7000-2. Green River, WY MSHA office was notified on 10/11/05.

March 8, 2005 WY · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
McMurry Ready Mix · Over-exertion (Not Elsewhere Classified)

Miner was replacing shocks on a pickup when he felt a pain in his chest. Miner was not lifting heavy objects, did not strike an object with his body, nor did he make an awkward movement. Pain did intesify with left arm motion.