Kauai Aggregates has $94K in proposed MSHA penalties and $601 outstanding across 4 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
14
Years on record
1983–2025
Latest incident
Nov 2025
Compliance record
MSHA citations since 2000
210
citations
75
significant & substantial
$94,046
proposed penalties
$90,737
paid to date
96% of proposed penalties paid to date, a $3,309 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.
210 citations across 1,196 inspection hours.
Source: MSHA inspections data, updated weekly.
Imminent-danger orders
ⓘA Section 107(a) order removes miners from an area when an inspector finds an imminent danger. Each order is lifted once the condition is corrected, so this counts orders issued, not orders now in effect.
2
Section 107(a) orders
Most recent order: 2020-08-12.
On record since 2015.
Source: MSHA imminent-danger order records, updated weekly.
Kauai Aggregates has $94K in proposed MSHA penalties and $601 outstanding across 4 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.
$94K
proposed penalties
$91K
current assessed
$91K
paid to date
$601
outstanding
206 assessments are final orders; 4 contested dockets.
Of $27K in penalties contested before the Commission, $24K was upheld in final decisions.
As of the most recent assessment on 2026-03-10.
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.
18citations taken to the federal commission · 9% of citations on record
Settled
10 · 56%
Stood as issued
7 · 39%
Vacated or withdrawn
1 · 6%
91%
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 11 decided S&S contests · industry: 79%
12%
Penalty reduction in decided contests
$27K proposed, $24K 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 2015-04-22.
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: 2015-01-27, 11 years ago
0%
of limit-tested samples over the exposure limit
15
samples
5
limit-tested
Most sampled contaminants
Respirable dust, <.1mg6
Nuisance dust, respirable, <1% Qtz4
Unlisted Particulate, respirable, <1% Qtz4
Quartz, respirable, >1% Qtz1
Show the individual readings (15)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2015-01-27
Unlisted Particulate, respirable, <1% Qtz
0.18
Laborer, Bullgang
2015-01-27
Respirable dust, <.1mg
0
Crusher Oper/Worker
2015-01-27
Unlisted Particulate, respirable, <1% Qtz
0.21
Laborer, Bullgang
2013-09-17
Respirable dust, <.1mg
0
Crusher Oper/Worker
2013-09-17
Respirable dust, <.1mg
0
Backhoe Operator
2009-03-18
Respirable dust, <.1mg
0
Backhoe Operator
2009-03-18
Nuisance dust, respirable, <1% Qtz
0.12
10
0.01
Front-end Loader Operator
2009-03-18
Quartz, respirable, >1% Qtz
0.74
3.18
0.23
Laborer, Bullgang
2009-03-18
Nuisance dust, respirable, <1% Qtz
1.65
10
0.17
Crusher Oper/Worker
2004-04-22
Unlisted Particulate, respirable, <1% Qtz
0.23
Cleanup Man
2004-04-22
Unlisted Particulate, respirable, <1% Qtz
0.67
Crusher Oper/Worker
2004-04-22
Respirable dust, <.1mg
0
Front-end Loader Operator
2001-02-06
Nuisance dust, respirable, <1% Qtz
1.25
10
0.13
Crusher Oper/Worker
2001-02-06
Respirable dust, <.1mg
0
Mechanic
2001-02-06
Nuisance dust, respirable, <1% Qtz
0.15
10
0.02
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.
Kauai Aggregates recorded 6.51 reportable injury cases per 100 full-time workers in 2025.
Injury rate, 2025
ⓘ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.
6.51
total case rate
6.51
days-away rate
0.000
fatality rate
Above average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Hawaii, metal and nonmetal mining averaged 2.21 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
2025 *
6.51
6.51
0.000
2024 *
5.97
5.97
0.000
2023 *
0.00
0.00
0.000
2022 *
0.00
0.00
0.000
2021 *
6.28
6.28
0.000
2020 *
0.00
0.00
0.000
2019 *
0.00
0.00
0.000
2009 *
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
17
2025
16
2024
15
2023
14
2022
13
2021
14
2020
14
2019
12
2018
10
2017
9
2016
12
2015
10
2014
10
2013
9
2012
9
2011
8
2010
8
2009
8
2008
8
2007
8
2006
8
2005
8
2004
8
2003
9
2002
10
2001
9
2000
8
Source: MSHA quarterly employment and production, updated weekly.
Kauai Aggregates sits in Kauai County, Hawaii, 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.
Kauai County, Hawaii · Population 73,610
0.0%
Mining share of county employment
$93,612
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
8,913
0
0
0.0
2026 Q1
6,526
2
1
306.5
2025 Q4
9,478
0
0
0.0
2025 Q3
6,627
0
0
0.0
2025 Q2
7,755
2
0
257.9
2025 Q1
6,846
0
0
0.0
2024 Q4
8,907
1
0
112.3
2024 Q3
7,791
0
0
0.0
Show 94 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
9,305
2
0
214.9
2024 Q1
7,481
1
1
133.7
2023 Q4
8,118
3
0
369.5
2023 Q3
7,569
0
0
0.0
2023 Q2
8,544
1
0
117.0
2023 Q1
6,003
1
0
166.6
2022 Q4
7,228
0
0
0.0
2022 Q3
7,019
0
0
0.0
2022 Q2
7,415
3
1
404.6
2022 Q1
5,989
0
0
0.0
2021 Q4
8,189
1
0
122.1
2021 Q3
8,770
0
0
0.0
2021 Q2
7,886
3
2
380.4
2021 Q1
7,017
9
3
1282.6
2020 Q4
8,848
0
0
0.0
2020 Q3
8,876
5
2
563.3
2020 Q2
5,955
0
0
0.0
2020 Q1
7,411
4
2
539.7
2019 Q4
6,624
0
0
0.0
2019 Q3
5,969
0
0
0.0
2019 Q2
5,046
5
0
990.9
2019 Q1
5,005
3
1
599.4
2018 Q4
4,740
0
0
0.0
2018 Q3
5,320
0
0
0.0
2018 Q2
4,600
4
4
869.6
2018 Q1
3,591
4
0
1113.9
2017 Q4
4,270
0
0
0.0
2017 Q3
4,500
4
0
888.9
2017 Q2
3,500
0
0
0.0
2017 Q1
3,987
8
2
2006.5
2016 Q4
3,344
0
0
0.0
2016 Q3
3,626
0
0
0.0
2016 Q2
3,574
5
0
1399.0
2016 Q1
4,564
4
0
876.4
2015 Q4
3,547
0
0
0.0
2015 Q3
3,052
0
0
0.0
2015 Q2
3,344
4
2
1196.2
2015 Q1
3,775
8
6
2119.2
2014 Q4
4,244
0
0
0.0
2014 Q3
3,985
0
0
0.0
2014 Q2
4,952
3
2
605.8
2014 Q1
5,065
2
0
394.9
2013 Q4
4,623
0
0
0.0
2013 Q3
5,564
5
1
898.6
2013 Q2
4,767
0
0
0.0
2013 Q1
4,872
3
0
615.8
2012 Q4
3,803
0
0
0.0
2012 Q3
3,889
0
0
0.0
2012 Q2
3,886
5
3
1286.7
2012 Q1
4,750
0
0
0.0
2011 Q4
4,154
4
0
962.9
2011 Q3
3,956
0
0
0.0
2011 Q2
4,168
2
0
479.8
2011 Q1
2,913
13
4
4462.8
2010 Q4
3,609
0
0
0.0
2010 Q3
4,746
0
0
0.0
2010 Q2
4,594
5
2
1088.4
2010 Q1
4,369
0
0
0.0
2009 Q4
3,867
0
0
0.0
2009 Q3
4,063
0
0
0.0
2009 Q2
8,919
0
0
0.0
2009 Q1
3,710
3
0
808.6
2008 Q4
3,413
11
5
3223.0
2008 Q3
3,568
2
1
560.5
2008 Q2
5,635
0
0
0.0
2008 Q1
4,766
4
2
839.3
2007 Q4
4,190
2
0
477.3
2007 Q3
4,302
0
0
0.0
2007 Q2
4,630
1
0
216.0
2007 Q1
4,884
0
0
0.0
2006 Q4
5,165
0
0
0.0
2006 Q3
5,420
0
0
0.0
2006 Q2
5,100
5
1
980.4
2006 Q1
4,700
1
0
212.8
2005 Q4
4,836
0
0
0.0
2005 Q3
5,785
0
0
0.0
2005 Q2
1,344
1
1
744.0
2005 Q1
6,572
0
0
0.0
2004 Q4
4,544
0
0
0.0
2004 Q3
5,074
0
0
0.0
2004 Q2
5,722
3
0
524.3
2003 Q4
5,372
0
0
0.0
2003 Q3
4,941
0
0
0.0
2003 Q2
5,200
0
0
0.0
2003 Q1
5,112
0
0
0.0
2002 Q4
3,285
0
0
0.0
2002 Q3
4,383
0
0
0.0
2002 Q2
3,519
17
13
4830.9
2002 Q1
4,885
0
0
0.0
2001 Q4
5,544
6
2
1082.3
2001 Q3
5,229
0
0
0.0
2001 Q2
4,442
0
0
0.0
2001 Q1
4,072
4
0
982.3
2000 Q4
3,977
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
14 on file
2025 · 1 incident
November 11, 2025HI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanMACHINERY
The employee was helping a mechanic repair a piece of equipment. While holding the nut on one side of a bolt, the mechanic tightened the bolt from the opposite end. The employee did not maintain a secure grip on the bolt, resulting in the bolt slicing the side of their right middle finger.
2024 · 1 incident
January 22, 2024HI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techHANDLING OF MATERIALS
While doing maintenance on an Excavator and trying to unscrew a bolt, employee's left arm caught onto a piece of metal causing a 6-8 cm laceration to the left distal forearm.
2021 · 1 incident
July 30, 2021HI · Metal/Non-Metalquality control technician, laboratory technician, laboratory assistantSLIP OR FALL OF PERSON
Employee was assisting a team of 5 with moving of conveyor belts to a different area within our property. Employee climbed onto conveyor belt #2 to guide the operator with conveyor #1. While moving, Conveyor #1 got caught on a rock and swung back hitting conveyor #2, causing Employee to fall.
2016 · 1 incident
December 13, 2016HI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techDISORDERS (REPEATED TRAUMA)
We were notified by hearing testing technician that one of our miners had hearing loss in both ears necessitating a baseline revision.
2015 · 1 incident
July 8, 2015HI · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorSLIP OR FALL OF PERSON
The employee jumped off of a feeder hopper into the rocks and twisted and bruised his knee. No bones were broke and nothing was tore in the knee, just bad bruising.
2013 · 1 incident
August 28, 2013HI · Metal/Non-Metalmaintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service techMACHINERY
A conveyor belt had been set on the ground by lifting equipment, the employee went onto the belt of the conveyor to unhook the lifting chains, the lifting equipment subsequently bumped the conveyor while the employee was till on the conveyor belt, and the employee fell onto the ground.
1993 · 1 incident
July 12, 1993HI · Metal/Non-Metalbulldozer operator, universal operator, heavy equipment operator, operating engineerHANDLING OF MATERIALS
980 LOADOPERATOR WAS WSAHING DOWN LOADER WHEN HE SAW TRUCKS COMING INTO HAUL HE SLOWLY MOVED FORWARE W/BUCKTE ABOUT 4FT IN MID AIR AT SOME TIME LABORER WALKED IN FRONT OF LOADER LOADER BUCKET BUMPED LABORER CAUSING HIM TO FALL WHEN FALLING HIS HARD HAT FELL FORWARD & LABORER FELL ON HARD HAT CUTTING ABOVE LIP (BETWEEN NOSE & LIP_
1991 · 1 incident
May 21, 1991HI · Metal/Non-Metallaborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitmanPOWERED HAULAGE
PER EMPLOYEE, HE WAS SCRAPPING AND CLEANING THE #9 ROLLER W/IRON SCRAPER W/ WOODEN HANDLE. HE GALNCED AWAY TO LOOK AT ANOTHER AREA OF THE CRUSHER. UNKNOWNELLY, HIS SCRAPPER CAME IN CONTACT W / ROLLER KICKING THE SCRAPER BACK TWOARDS HISM, HITTING THE WOODEN HANDLE INT HE PALM OF HIS LEFT HAND.
WHILE CHECKING EMPLOYES REPAIRING CONE CRUSHER. EQUIPMENT WAS BEING LIFTED WITH A CHAIN ON A FORKLIFT. EQUIPMENT OPERATOR LOWERED THE FORKLIFT PREMATURELY, CAUSING CHAIN TO SLIP ON FORKS. SLIP PING CHAIN HIT EMPLOYEE IN PALM OF HAND.
September 1, 1990HI · Metal/Non-Metalbelt foreman, maintenance foreman, maintenance supervisorHANDLING OF MATERIALS