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.
72 citations across 1,089 inspection hours.
Source: MSHA inspections data, updated weekly.
JUMBO-JENSEN MINE has $8K 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.
$8K
proposed penalties
$8K
current assessed
$8K
paid to date
$0
outstanding
72 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2025-03-12.
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.
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: 2025-03-12
0%
of limit-tested samples over the exposure limit
18
samples
12
limit-tested
Most sampled contaminants
Quartz, respirable, >1% Qtz6
Respirable dust, <.1mg5
Nuisance dust, total, <1% Qtz4
Nuisance dust, respirable, <1% Qtz2
Show the individual readings (18)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2025-03-12
Nuisance dust, total, <1% Qtz
0.29
10
0.03
Front-end Loader Operator
2025-03-12
Nuisance dust, total, <1% Qtz
0.36
10
0.04
Crusher Oper/Worker
2025-03-12
Nuisance dust, total, <1% Qtz
0
10
0.00
Bulldozer Operator
2025-03-12
Nuisance dust, total, <1% Qtz
0.24
10
0.02
Truck Driver
2019-05-22
Respirable dust, <.1mg
0
Truck Driver
2019-05-22
Respirable dust, <.1mg
0
Bulldozer Operator
2019-05-22
Unlisted Particulate, respirable, <1% Qtz
0.5
Crusher Oper/Worker
2019-05-22
Respirable dust, <.1mg
0
Drill Operator, Rotary
2015-04-15
Respirable dust, <.1mg
0
Drill Operator, Rotary
2015-04-15
Nuisance dust, respirable, <1% Qtz
0.18
10
0.02
Crusher Oper/Worker
2015-04-15
Respirable dust, <.1mg
0
Bulldozer Operator
2015-04-15
Nuisance dust, respirable, <1% Qtz
0.36
10
0.04
Truck Driver
2011-03-17
Quartz, respirable, >1% Qtz
0.59
3.08
0.19
Truck Driver
2011-03-17
Quartz, respirable, >1% Qtz
0.81
2.62
0.31
Supervisor, Co. Official
2011-03-17
Quartz, respirable, >1% Qtz
0.37
2.01
0.18
Truck Driver
2011-03-17
Quartz, respirable, >1% Qtz
0.5
2.12
0.24
Crusher Oper/Worker
2009-11-04
Quartz, respirable, >1% Qtz
1.02
1.07
0.95
Crusher Oper/Worker
2009-11-04
Quartz, respirable, >1% Qtz
0.72
2.05
0.35
Truck Driver
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.
JUMBO-JENSEN MINE recorded 0.00 reportable injury cases per 100 full-time workers in 2021.
Injury rate, 2021
ⓘ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 1.87 and the all-US-mining average was 2.19 cases per 100 workers.
In Utah, metal and nonmetal mining averaged 1.31 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
2021 *
0.00
0.00
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2018 *
0.00
0.00
0.000
2017 *
0.00
0.00
0.000
2016 *
0.00
0.00
0.000
2007 *
0.00
0.00
0.000
2006 *
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
2025
6
2024
9
2023
9
2022
10
2021
12
2020
11
2019
13
2018
13
2017
13
2016
11
2015
8
2014
8
2013
8
2012
7
2011
8
2010
8
2009
8
2008
10
2007
12
2006
18
2005
23
2004
21
2003
19
2002
19
2001
19
2000
18
Source: MSHA quarterly employment and production, updated weekly.
JUMBO-JENSEN MINE sits in Sevier County, Utah, where the Census mining category is 3.4% 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.
Sevier County, Utah · Population 21,854
3.4%
Mining share of county employment
$73,765
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
EE WAS WORKING ON THE ROD OF THE RIDE CYNDER OF THE CATERPILLAR 769C HAUL TRUCK USING AN ACETYLENE TORCH TO HEAT THE BROKEN NITROGEN VALVE. AN EXPLOSION OCCURRED CAUSING THE 113 LB ROD TO BE E XPELLED FROM THE CYLINDER STRIKING THE EE IN THESTOMACH CAUSING FATAL INTERNAL INJURIES.
Reportable incidents
8 on file (excluding fatalities above)
2013 · 1 incident
April 24, 2013UT · Metal/Non-Metaloutside foreman, leadmanOTHER
Employee was receiving required CBC blood draw on the PHS mobile testing van when he became light-headed and lost consciousness. He was only out for a few seconds and was easily aroused by PHS employee talking to him.
EE was repeatedly swing sledge hammers to help unplug feed chute. He was sore that night, but woke up next morning feeling worse & reported injury when he came to work 12/22. Initially he felt it was a slight pull & he worked that day. 2 doc visits 12/23 diagnosis: strain-rotator cuff, release no restrictions, 12/27 prescribed Naproxin, 2 wks PT, again no restrictions.
EE was loading explosives into drill holes.Holes on the edge of the bench were on sloping ground so the ee was using a full body harness and lanyard for fall protection. EE lost his footing and slid app. 1' down the side of the bench, his slide was stopped by the fall arrest system. He slid, he reached up to grab the lanyard, which extended his left shoulder causing the injury.
2006 · 1 incident
September 15, 2006UT · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
Employee was tightening bolt on rock breaker with impact on top of bolt & a wrench on the bottom nut. As the wrench was activated, bottom nut & wrench rotated. The wrench pinched his finger between the wrench & the base of the rock breaker. This resulted in fracture to employee's right distal on his middle finger. *Fracture determined to be OLD injury-Not Reportable-Deg 10*
1994 · 1 incident
August 2, 1994UT · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDTOOLS (NONPOWERED)
EE WAS TIGHTENING A BOLT ON ROCK BREAKER WITH AN18" BREAKER BAR & A 15/16" WRENCH. EE WAS PUSHING WITH HAND CHEST HIGH & PULLING WITH RIGHT HANDFACE HIGH. WRENCH IN RIGHT HAND SLIPPED ON BOLT HEAD CAUSING HAND & WRENCH TO HIT EE IN MOUTH BREAKING TOOTH.
1991 · 1 incident
January 15, 1991UT · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
INJURED WAS USI3G A 3/4 TON RATCHET HOIST TO LIFT A QUARRY DRILL TRACK IN ORDER TO REMOVE BLOCKING UNDER THE TRACK THE BOTTOM HOIST HOOK WAS NOT PROPERLY CONNECTED TO THE BOTTOM TRACK AS THE INJURED BEGAN 7O RAISE THE TRACK THE HOOK SLIPPED AND THE HOIST GAVE WAY INVESTIGATION FAILED TO REVEAL WHETHER THE HAND WAS STRUCK OR PINCHED BETWEEN THE HOIST AND THE DRILL DECKING
1986 · 1 incident
July 8, 1986UT · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSTEPPING OR KNEELING ON OBJECT
INJURED WAS WAL5ING AROUND THE DRILL AND WAS INATTENTIVE TO THE CONDITION OF THE GROUND SURFACE. HE STEPPEDC ON A ROCK THE APPROXIMATE SIZE OF A BASEBALL. THE ROCK ROLLED UNDER THE WEIGHT OF T HE EMPLOYEE AND3CAUSED HIS ANKLE TO TWIST, RESLTING IN A SEVERE SPRAIN.
Related mines
Other mines operated by United States Gypsum Company