Mining Incidents

AGUA FRIA PIT Metal/Non-Metal

CalPortland Company · Surface
Controlled by Taiheiyo Cement Corp
Mesa, Santa Cruz County, AZ  ·  Active
MSHA Mine ID: 0202181

AGUA FRIA PIT has $12K in proposed MSHA penalties and $151 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
6
Years on record
2003–2009
Latest incident
Aug 2009
Compliance record
MSHA citations since 2000
81
citations
10
significant & substantial
$12,033
proposed penalties
$11,542
paid to date
96% of proposed penalties paid to date, a $491 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
71
inspections on record
724
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: 724 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.

AGUA FRIA PIT has $12K in proposed MSHA penalties and $151 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.
$12K
proposed penalties
$12K
current assessed
$12K
paid to date
$151
outstanding
80 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2026-03-11.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
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 3,142 0 0 0.0
2025 Q3 2,658 0 0 0.0
2025 Q2 3,325 0 0 0.0
2025 Q1 3,473 0 0 0.0
2024 Q4 3,518 0 0 0.0
2024 Q3 3,772 0 0 0.0
2024 Q2 3,690 0 0 0.0
2024 Q1 3,508 2 0 570.1
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 3,634 0 0 0.0
2023 Q3 3,616 0 0 0.0
2023 Q2 4,039 0 0 0.0
2023 Q1 4,808 0 0 0.0
2022 Q4 3,062 0 0 0.0
2022 Q3 2,227 0 0 0.0
2022 Q2 3,717 0 0 0.0
2022 Q1 3,348 0 0 0.0
2021 Q4 3,272 0 0 0.0
2021 Q3 4,405 0 0 0.0
2021 Q2 2,767 2 0 722.8
2021 Q1 2,930 0 0 0.0
2020 Q4 2,826 4 1 1415.4
2020 Q3 3,080 0 0 0.0
2020 Q2 2,632 2 0 759.9
2020 Q1 2,126 0 0 0.0
2019 Q4 2,051 0 0 0.0
2019 Q3 2,479 3 1 1210.2
2019 Q2 1,665 0 0 0.0
2019 Q1 5,184 3 2 578.7
2018 Q4 5,034 0 0 0.0
2018 Q3 3,670 0 0 0.0
2018 Q2 1,515 1 0 660.1
2018 Q1 1,798 0 0 0.0
2017 Q4 1,720 3 0 1744.2
2017 Q3 1,665 1 0 600.6
2017 Q2 1,901 0 0 0.0
2017 Q1 2,045 0 0 0.0
2016 Q4 1,895 0 0 0.0
2016 Q3 1,759 14 0 7959.1
2016 Q2 1,610 0 0 0.0
2016 Q1 1,834 0 0 0.0
2015 Q4 1,526 1 0 655.3
2015 Q3 1,463 0 0 0.0
2015 Q2 1,570 0 0 0.0
2015 Q1 1,588 0 0 0.0
2014 Q4 1,548 0 0 0.0
2014 Q3 1,205 0 0 0.0
2014 Q2 1,416 1 0 706.2
2014 Q1 1,323 0 0 0.0
2013 Q4 1,057 0 0 0.0
2013 Q3 1,350 0 0 0.0
2013 Q2 1,329 0 0 0.0
2013 Q1 1,576 0 0 0.0
2012 Q4 2,513 3 0 1193.8
2012 Q3 1,711 1 0 584.5
2012 Q2 1,798 0 0 0.0
2012 Q1 2,232 0 0 0.0
2011 Q4 1,958 0 0 0.0
2011 Q3 2,036 0 0 0.0
2011 Q2 1,868 0 0 0.0
2011 Q1 1,454 3 0 2063.3
2010 Q4 1,453 0 0 0.0
2010 Q3 1,424 0 0 0.0
2010 Q2 1,588 2 0 1259.4
2010 Q1 1,278 0 0 0.0
2009 Q4 1,129 1 0 885.7
2009 Q3 1,179 0 0 0.0
2009 Q2 1,759 1 0 568.5
2009 Q1 2,481 0 0 0.0
2008 Q4 2,181 0 0 0.0
2008 Q3 2,491 1 0 401.4
2008 Q2 2,712 0 0 0.0
2008 Q1 2,362 3 0 1270.1
2007 Q4 2,027 3 0 1480.0
2007 Q3 2,553 0 0 0.0
2007 Q2 2,647 1 0 377.8
2007 Q1 2,131 1 0 469.3
2006 Q4 2,090 0 0 0.0
2006 Q3 2,602 3 0 1153.0
2006 Q2 3,523 4 0 1135.4
2006 Q1 3,214 0 0 0.0
2005 Q4 3,859 0 0 0.0
2005 Q3 3,215 0 0 0.0
2005 Q2 4,112 0 0 0.0
2005 Q1 3,709 0 0 0.0
2004 Q4 6,085 2 0 328.7
2004 Q3 4,780 2 0 418.4
2004 Q2 4,780 0 0 0.0
2004 Q1 4,143 1 0 241.4
2003 Q4 8,263 5 3 605.1
2003 Q3 7,142 0 0 0.0
2003 Q2 6,975 0 0 0.0
2003 Q1 8,160 0 0 0.0
2002 Q4 4,160 0 0 0.0
2002 Q3 4,160 2 0 480.8
2002 Q2 3,640 0 0 0.0
2002 Q1 4,680 0 0 0.0
2001 Q4 4,680 0 0 0.0
2001 Q3 4,680 0 0 0.0
2001 Q2 6,240 0 0 0.0
2001 Q1 6,240 1 1 160.3
2000 Q4 4,680 0 0 0.0
2000 Q3 4,680 0 0 0.0
2000 Q2 4,680 0 0 0.0
2000 Q1 3,640 3 2 824.2
No fatalities recorded at this mine.

Reportable incidents

6 on file

2009 · 1 incident

August 17, 2009 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
CalPortland Company · Struck by... (Not Elsewhere Classified)

Employee was removing a roller at the wash plant. The roller slipped causing a small cut to the employee's right ring finger. About 10-15 minutes later, after the finger was cleaned and a bandaid put on the cut, the ee passed out. By the time EMTs arrived, he had gained consciousness but was taken to the hospital to be checked. He was fine except for the small cut.

2008 · 1 incident

April 1, 2008 AZ · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator SLIP OR FALL OF PERSON
CPC Southwest Materials Inc · Fall to lower level, (Not Elsewhere Classified)

Isolated case of Employee misconduct where Employee failed to follow procedures and climbed onto the sand screw containment at the Wash Plant without the use of a ladder or a fall protection system and fell approximately 8.5 feet to the ground landing on his left shoulder.

2006 · 2 incidents

June 14, 2006 AZ · Metal/Non-Metal tipple/top lander/skip dumper operator, binman, topman DISORDERS (PHYSICAL AGENTS)
CPC Southwest Materials Inc · Contact with heat

Employee passed out from heat exhaustion and dehydration. Employee was treated at hospital emergency room and released regular duty.

February 2, 2006 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
CPC Southwest Materials Inc · Fall to the walkway or working surface

Employee slipped on leaking flocculant and fell onto a concrete floor injuring his upper back. Employee did not wish to see a doctor at the time of injury. He asked to see a doctor on 2/9/2006.

2005 · 1 incident

June 20, 2005 AZ · Metal/Non-Metal assayer, geologist, metallurgist, engineer, engineer management HANDLING OF MATERIALS
Padilla Sand & Gravel Redi-Mix Inc · Over-exertion in wielding or throwing objects

Employee was changing screen on wash plant. He threw old screen off of deck and strained elbow. Accident was not recordable until 6-29-05 when he was placed on restricted duty.

2003 · 1 incident

November 21, 2003 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDTOOLS (NONPOWERED)
Padilla Sand & Gravel Redi-Mix Inc · Struck by... (Not Elsewhere Classified)

EE WAS USING A RAZOR KNIFE TO CUT CONVEYER BELTING. THE BLADE BROKE CAUSING THE KNIFE TO SLIP AND CUT THE EE'S HAND BELOW THE THUMB. LACERATION REQUIRED 4 STITCHES TO CLOSE THE WOUND.

For insurers, brokers, and safety consultants

The full compliance file on AGUA FRIA PIT

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.