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: 681 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
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.
1
Section 107(a) orders
Most recent order: 2011-04-26.
On record since 2011.
Source: MSHA imminent-danger order records, updated weekly.
Waikapu Quarry has $20K in proposed MSHA penalties and $7K outstanding across 2 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.
$20K
proposed penalties
$20K
current assessed
$13K
paid to date
$7K
outstanding
54 assessments are final orders; 2 contested dockets.
Of $307 in penalties contested before the Commission, $307 was upheld in final decisions.
As of the most recent assessment on 2026-06-01.
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.
2citations taken to the federal commission · 3% of citations on record
Settled
1 · 50%
Stood as issued
1 · 50%
0%
Penalty reduction in decided contests
$307 proposed, $307 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 A dismissed or defaulted contest leaves the citation standing as issued; a vacated or withdrawn citation is removed from the violation record.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 2010-08-03.
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: 2024-11-27
0%
of limit-tested samples over the exposure limit
17
samples
5
limit-tested
Most sampled contaminants
Respirable dust, <.1mg5
Unlisted Particulate, respirable, <1% Qtz5
Nuisance dust, total, <1% Qtz3
Unlisted Particulate, total, <1% Qtz2
Show the individual readings (17)
Date
Contaminant
Concentration
Limit
Conc / limit
Occupation
2024-11-27
Unlisted Particulate, total, <1% Qtz
9.59
Cleanup Man
2022-11-10
Nuisance dust, total, <1% Qtz
0
10
0.00
Truck Driver
2022-11-10
Nuisance dust, total, <1% Qtz
0
10
0.00
Front-end Loader Operator
2021-11-19
Nuisance dust, total, <1% Qtz
0
10
0.00
Front-end Loader Operator
2021-05-14
Unlisted Particulate, total, <1% Qtz
0.6
Front-end Loader Operator
2015-02-04
Respirable dust, <.1mg
0
Crusher Oper/Worker
2015-02-04
Respirable dust, <.1mg
0
Front-end Loader Operator
2013-01-16
Unlisted Particulate, respirable, <1% Qtz
0.67
Laborer, Bullgang
2013-01-16
Unlisted Particulate, respirable, <1% Qtz
0.64
Crusher Oper/Worker
2009-10-21
Unlisted Particulate, respirable, <1% Qtz
0.15
Crusher Oper/Worker
2009-10-21
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-03-27
Respirable dust, <.1mg
0
Front-end Loader Operator
2009-03-27
Quartz, respirable, >1% Qtz
0.16
1.16
0.14
Crusher Oper/Worker
2009-03-27
Nuisance dust, respirable, <1% Qtz
0.19
10
0.02
Backhoe Operator
2009-03-27
Respirable dust, <.1mg
0
Front-end Loader Operator
2005-04-18
Unlisted Particulate, respirable, <1% Qtz
0.36
Front-end Loader Operator
2005-04-18
Unlisted Particulate, respirable, <1% Qtz
0.41
Crusher Oper/Worker
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.
Waikapu Quarry recorded 0.00 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.
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 1.65 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 *
0.00
0.00
0.000
2024 *
0.00
0.00
0.000
2007 *
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
7
2025
8
2024
7
2023
6
2022
8
2021
6
2020
6
2019
6
2018
6
2017
5
2016
5
2015
4
2014
6
2013
5
2012
6
2011
5
2010
6
2009
6
2008
7
2007
8
2006
6
2005
6
2004
2
2003
0
2002
0
2001
1
2000
0
Source: MSHA quarterly employment and production, updated weekly.
Waikapu Quarry sits in Maui 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.
Maui County, Hawaii · Population 164,632
0.0%
Mining share of county employment
$95,076
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
4,940
4
3
809.7
2026 Q1
4,940
3
2
607.3
2025 Q4
4,940
0
0
0.0
2025 Q3
6,320
0
0
0.0
2025 Q2
6,318
2
0
316.6
2025 Q1
6,318
0
0
0.0
2024 Q4
5,564
0
0
0.0
2024 Q3
5,564
0
0
0.0
Show 97 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
4,340
0
0
0.0
2024 Q1
4,706
1
0
212.5
2023 Q4
3,965
0
0
0.0
2023 Q3
3,120
0
0
0.0
2023 Q2
3,120
0
0
0.0
2023 Q1
2,860
0
0
0.0
2022 Q4
2,340
1
0
427.4
2022 Q3
2,535
0
0
0.0
2022 Q2
2,860
0
0
0.0
2022 Q1
7,020
0
0
0.0
2021 Q4
2,860
0
0
0.0
2021 Q3
2,860
0
0
0.0
2021 Q2
2,860
0
0
0.0
2021 Q1
2,860
0
0
0.0
2020 Q4
1,996
0
0
0.0
2020 Q3
1,996
0
0
0.0
2020 Q2
3,380
0
0
0.0
2020 Q1
3,829
0
0
0.0
2019 Q4
3,153
0
0
0.0
2019 Q3
3,185
0
0
0.0
2019 Q2
3,185
0
0
0.0
2019 Q1
3,185
0
0
0.0
2018 Q4
2,015
0
0
0.0
2018 Q3
3,217
0
0
0.0
2018 Q2
3,217
1
0
310.8
2018 Q1
4,004
0
0
0.0
2017 Q4
2,925
0
0
0.0
2017 Q3
4,182
2
0
478.2
2017 Q2
2,925
0
0
0.0
2017 Q1
2,925
0
0
0.0
2016 Q4
2,680
0
0
0.0
2016 Q3
2,925
0
0
0.0
2016 Q2
2,925
0
0
0.0
2016 Q1
2,304
0
0
0.0
2015 Q4
3,056
0
0
0.0
2015 Q3
2,376
0
0
0.0
2015 Q2
2,080
0
0
0.0
2015 Q1
2,860
0
0
0.0
2014 Q4
4,419
0
0
0.0
2014 Q3
3,168
0
0
0.0
2014 Q2
3,168
0
0
0.0
2014 Q1
2,560
1
0
390.6
2013 Q4
2,560
0
0
0.0
2013 Q3
2,560
0
0
0.0
2013 Q2
2,560
0
0
0.0
2013 Q1
2,480
1
0
403.2
2012 Q4
2,728
0
0
0.0
2012 Q3
2,772
0
0
0.0
2012 Q2
2,772
1
0
360.8
2012 Q1
2,772
0
0
0.0
2011 Q4
2,684
1
0
372.6
2011 Q3
2,560
0
0
0.0
2011 Q2
2,520
5
2
1984.1
2011 Q1
2,520
4
1
1587.3
2010 Q4
2,832
0
0
0.0
2010 Q3
3,072
0
0
0.0
2010 Q2
2,520
1
0
396.8
2010 Q1
2,400
0
0
0.0
2009 Q4
3,168
1
0
315.7
2009 Q3
3,072
0
0
0.0
2009 Q2
2,520
0
0
0.0
2009 Q1
2,440
0
0
0.0
2008 Q4
2,880
0
0
0.0
2008 Q3
3,072
0
0
0.0
2008 Q2
3,024
0
0
0.0
2008 Q1
4,032
0
0
0.0
2007 Q4
3,840
1
0
260.4
2007 Q3
5,840
0
0
0.0
2007 Q2
6,127
7
2
1142.5
2007 Q1
5,296
0
0
0.0
2006 Q4
4,841
0
0
0.0
2006 Q3
6,280
0
0
0.0
2006 Q2
4,813
3
0
623.3
2006 Q1
4,021
5
0
1243.5
2005 Q4
3,663
0
0
0.0
2005 Q3
3,303
0
0
0.0
2005 Q2
3,944
4
0
1014.2
2005 Q1
2,004
0
0
0.0
2004 Q4
1,280
9
0
7031.2
2004 Q3
48
0
0
0.0
2004 Q2
48
0
0
0.0
2004 Q1
0
0
0
2003 Q4
0
0
0
2003 Q3
0
0
0
2003 Q2
0
0
0
2003 Q1
0
0
0
2002 Q3
0
0
0
2002 Q2
0
0
0
2002 Q1
0
0
0
2001 Q4
0
0
0
2001 Q3
160
0
0
0.0
2001 Q2
0
0
0
2001 Q1
0
0
0
2000 Q4
0
1
0
2000 Q3
0
0
0
2000 Q2
32
0
0
0.0
2000 Q1
0
0
0
No fatalities recorded at this mine.
Reportable incidents
4 on file
2022 · 1 incident
July 26, 2022HI · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorHANDLING OF MATERIALS
Mine was not operating when the quarry manager was notified that there was a brush fire headed toward an inactive area of the mine. Fire was extinguished prior to getting to active mining area. A decommission water truck was damaged during the fire. There were no miner fatalities or injuries.
2006 · 1 incident
July 13, 2006HI · Metal/Non-Metalfront-end loader, scraper-loader operator, pan operator, payloader, scraper rig operatorOTHER
Hawaiian Cement · Absorption of radiations, caustics, toxic and noxious substances
A bee came in through the window and stung employee on right calf. A couple of days later sting became infected.
2005 · 1 incident
December 19, 2005HI · Metal/Non-Metalwarehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operatorHANDTOOLS (NONPOWERED)
Employee was trying to clear a rock that was stuck in the jaw. He was using a wedge attached to a chain, standing on the platform above the jaw. The wedge bounced up and as it fell he was holding onto the chain and the weight pulled his shoulder.