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Waikapu Quarry Metal/Non-Metal

Hawaiian Cement · Surface
Controlled by Knife River Corporation
Wailuku, Maui County, HI  ·  Active
MSHA Mine ID: 5100171

Waikapu Quarry has $15K in proposed MSHA penalties and $2K outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
4
Years on record
2005–2022
Latest incident
Jul 2022
Compliance record
MSHA citations since 2000
59
citations
10
significant & substantial
$14,765
proposed penalties
$13,220
paid to date
90% of proposed penalties paid to date, a $1,545 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
52
inspections on record
681
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: 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.

Waikapu Quarry has $15K in proposed MSHA penalties and $2K 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.
$15K
proposed penalties
$15K
current assessed
$13K
paid to date
$2K
outstanding
54 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-03-06.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
See also the operator's enforcement record
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 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
2024 Q2 4,340 0 0 0.0
2024 Q1 4,706 1 0 212.5
Show 95 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
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, 2022 HI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator HANDLING OF MATERIALS
Hawaiian Cement · Over-exertion (Not Elsewhere Classified)

While flipping gates on the screener, bent over to reach for equipment resulting in a low back strain.

2016 · 1 incident

July 2, 2016 HI · Metal/Non-Metal FIRE
Hawaiian Cement · Accident type, without injuries

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, 2006 HI · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator OTHER
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, 2005 HI · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Hawaiian Cement · Over-exertion (Not Elsewhere Classified)

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.

For insurers, brokers, and safety consultants

The full compliance file on Waikapu Quarry

A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.

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