Mining Incidents

RILLITO QUARRY Metal/Non-Metal

CalPortland Company · Surface
Controlled by Taiheiyo Cement Corp
Rillito, Pima County, AZ  ·  Active
MSHA Mine ID: 0200006

RILLITO QUARRY has $26K in proposed MSHA penalties and $55 outstanding across 2 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
29
Years on record
1984–2020
Latest incident
Feb 2020
Compliance record
MSHA citations since 2002
92
citations
15
significant & substantial
$26,101
proposed penalties
$21,948
paid to date
84% of proposed penalties paid to date, a $4,153 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
62
inspections on record
1,119
inspection hours
8.2
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.
92 citations across 1,119 inspection hours.
Source: MSHA inspections data, updated weekly.

RILLITO QUARRY has $26K in proposed MSHA penalties and $55 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.
$26K
proposed penalties
$22K
current assessed
$22K
paid to date
$55
outstanding
91 assessments are final orders; 2 contested dockets.
As of the most recent assessment on 2024-10-04.
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 8,752 0 0 0.0
2025 Q3 9,883 0 0 0.0
2025 Q2 10,462 0 0 0.0
2025 Q1 8,793 0 0 0.0
2024 Q4 9,184 2 0 217.8
2024 Q3 9,925 0 0 0.0
2024 Q2 9,982 3 0 300.5
2024 Q1 10,882 0 0 0.0
Show 96 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2023 Q4 8,982 2 0 222.7
2023 Q3 9,196 0 0 0.0
2023 Q2 9,867 2 0 202.7
2023 Q1 10,135 1 0 98.7
2022 Q4 9,027 0 0 0.0
2022 Q3 10,145 0 0 0.0
2022 Q2 9,059 0 0 0.0
2022 Q1 9,355 0 0 0.0
2021 Q4 7,800 0 0 0.0
2021 Q3 9,501 0 0 0.0
2021 Q2 7,300 0 0 0.0
2021 Q1 6,974 0 0 0.0
2020 Q4 7,380 0 0 0.0
2020 Q3 7,805 0 0 0.0
2020 Q2 7,289 0 0 0.0
2020 Q1 7,365 1 0 135.8
2019 Q4 6,302 0 0 0.0
2019 Q3 7,340 0 0 0.0
2019 Q2 7,708 0 0 0.0
2019 Q1 6,879 1 0 145.4
2018 Q4 7,003 0 0 0.0
2018 Q3 7,405 0 0 0.0
2018 Q2 7,513 8 1 1064.8
2018 Q1 6,671 8 1 1199.2
2017 Q4 6,591 0 0 0.0
2017 Q3 6,960 3 1 431.0
2017 Q2 6,671 0 0 0.0
2017 Q1 6,087 6 1 985.7
2016 Q4 5,559 0 0 0.0
2016 Q3 6,474 0 0 0.0
2016 Q2 6,550 1 0 152.7
2016 Q1 6,542 7 2 1070.0
2015 Q4 6,599 0 0 0.0
2015 Q3 7,718 0 0 0.0
2015 Q2 6,961 5 1 718.3
2015 Q1 6,027 5 0 829.6
2014 Q4 6,314 0 0 0.0
2014 Q3 6,503 4 0 615.1
2014 Q2 6,090 0 0 0.0
2014 Q1 6,386 0 0 0.0
2013 Q4 4,712 3 1 636.7
2013 Q3 6,314 1 1 158.4
2013 Q2 6,397 0 0 0.0
2013 Q1 4,732 1 0 211.3
2012 Q4 5,663 0 0 0.0
2012 Q3 6,211 0 0 0.0
2012 Q2 5,596 0 0 0.0
2012 Q1 5,035 0 0 0.0
2011 Q4 5,543 0 0 0.0
2011 Q3 6,275 0 0 0.0
2011 Q2 6,421 3 0 467.2
2011 Q1 3,131 0 0 0.0
2010 Q4 6,641 0 0 0.0
2010 Q3 6,771 3 0 443.1
2010 Q2 6,567 0 0 0.0
2010 Q1 6,534 0 0 0.0
2009 Q4 4,904 0 0 0.0
2009 Q3 944 0 0 0.0
2009 Q2 2,936 0 0 0.0
2009 Q1 7,503 0 0 0.0
2008 Q4 8,884 0 0 0.0
2008 Q3 10,295 0 0 0.0
2008 Q2 9,947 0 0 0.0
2008 Q1 10,599 0 0 0.0
2007 Q4 10,946 0 0 0.0
2007 Q3 11,584 3 0 259.0
2007 Q2 11,635 0 0 0.0
2007 Q1 11,177 0 0 0.0
2006 Q4 10,644 6 1 563.7
2006 Q3 11,740 1 0 85.2
2006 Q2 11,670 0 0 0.0
2006 Q1 11,894 0 0 0.0
2005 Q4 11,564 0 0 0.0
2005 Q3 11,689 0 0 0.0
2005 Q2 11,713 0 0 0.0
2005 Q1 11,417 2 1 175.2
2004 Q4 12,138 0 0 0.0
2004 Q3 12,957 3 2 231.5
2004 Q2 11,569 0 0 0.0
2004 Q1 11,945 0 0 0.0
2003 Q4 11,645 0 0 0.0
2003 Q3 12,217 0 0 0.0
2003 Q2 11,723 0 0 0.0
2003 Q1 11,358 0 0 0.0
2002 Q4 11,250 0 0 0.0
2002 Q3 12,407 7 2 564.2
2002 Q2 12,234 0 0 0.0
2002 Q1 11,452 0 0 0.0
2001 Q4 11,365 0 0 0.0
2001 Q3 12,666 0 0 0.0
2001 Q2 12,100 0 0 0.0
2001 Q1 12,521 0 0 0.0
2000 Q4 10,562 0 0 0.0
2000 Q3 11,117 0 0 0.0
2000 Q2 11,196 0 0 0.0
2000 Q1 12,974 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

29 on file

2020 · 1 incident

February 7, 2020 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech SLIP OR FALL OF PERSON
CalPortland Company · Fall from machine

Employee was climbing down the ladder to the Quarry drill platform when EE slipped and landed on the ground below, which resulted in a right ankle sprain.

2014 · 1 incident

March 25, 2014 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman SLIP OR FALL OF PERSON
CalPortland Company · Fall from machine

Employee was exiting bulk truck, as he stepped on lower step his foot slipped off and he fell to the ground. As he was falling he tried to break his fall and stuck out his arm, breaking his wrist.

2008 · 1 incident

January 22, 2008 AZ · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey HANDLING OF MATERIALS
CalPortland Company · Over-exertion (Not Elsewhere Classified)

Employee was priming blastholes to be loaded that day. While getting ready to prime one hole he noticed a rock on the edge of the hole. He kneeled down to move the rock before he primed the hole, and when he stood up he twisted his knee. Employee was taken to the emergency room where he was told to take 3 days off.

2006 · 1 incident

June 14, 2006 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver OTHER
CalPortland Company · Bodily reaction, (Not Elsewhere Classified)

Employee sitting on seat of haul truck, reached to turn knob on radio and felt pain in left lower back. Taken to er, off one day and placed on modified duty.

2005 · 1 incident

March 11, 2005 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman POWERED HAULAGE
CalPortland Company · Caught in, under or between a moving and a stationary object

COWORKER WAS BACKING UP F-350 PICKUP WITH CAMPER TO LOAD ANFO BAGS FROM TRAILER. EE WAS GUIDING THE DRIVER WITH A FLASHLIGHT. AS THE DRIVER WAS BACKING UP, EE MOTIONED WITH HIS FLASHLIGHT TO STOP. THE DRIVER KEPT ON BACKING UP, PINNING EE FOR A SECOND BETWEEN THE CAMPER DOOR OF THE F-350 AND THE TRAILER. WHEN THE DRIVER HEARD EE, HE IMMEDIATELY PULLED FORWARD.

2003 · 1 incident

May 8, 2003 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator HANDLING OF MATERIALS
CalPortland Company · Over-exertion (Not Elsewhere Classified)

EE WAS CLEANING SPILLED MATERIAL FROM UNDER BELT CONVEYER USING A HOE, FELT PAIN IN LOWER BACK. WENT TO E.R. DURING THE WEEKEND, SENT TO CLINIC ON MONDAY 5-12-03, DIAGNOSED WITH BACK STRAIN, PLACED ON MODIFIED DUTY.

2002 · 1 incident

December 28, 2002 AZ · Metal/Non-Metal greaser, grease man, oiler, lube man, dragline oiler MACHINERY
CalPortland Company · Fall onto or against objects

EE WAS USING A CHIPPING GUN TO CLEAN OUT THE BUILDUP ON A VIBRATING GREZZLY WHEN THE HOSE ATTACHED TO THE GUN BLEW OFF, CAUSING EE TO LOSE HIS BALANCE AND HIT HIS KNEE ON THE CHIPPING GUN. EE WAS SEEN BY A PHYSICIAN ON 12-30-02 AND WAS DIAGNOSED WITH A CONTUSION, PLACED ON MODIFIED DUTY.

2000 · 2 incidents

October 28, 2000 AZ · Metal/Non-Metal truck driver SLIP OR FALL OF PERSON
CalPortland Company · Fall to the walkway or working surface

EE WAS ON LUNCH BREAK. WHEN HE HAD FINISHED HE WALKED OUTSIDE THE BREAK ROOM TO STRETCH HIS LEGS. WHILE WALKING AROUND HE STUMBLED ON A ROCK AND HIT HIS HEAD CAUSING A LACERATION REQUIRING TWO STITCHES TO CLOSE. IT HAD JUST RAINED , AREA WAS WET AND SLIPPERY.

June 13, 2000 AZ · Metal/Non-Metal truck driver SLIP OR FALL OF PERSON
CalPortland Company · Over-exertion (Not Elsewhere Classified)

EE WAS ON TOP OF OUR BULK TRUCK, LOADING IT FOR THE DAY. WHEN HE CAME DOWN THE LADDER ON THE BACK OF THE TRUCK, AS HE STEPPED DOWN TO THE GROUND HE STARTED TO TURN AND INJURED HIS KNEE.

1999 · 4 incidents

September 19, 1999 AZ · Metal/Non-Metal welder (shop) HANDLING OF MATERIALS
CalPortland Company · Over-exertion (Not Elsewhere Classified)

WHILE TURNING AND REACHING FOR ELECTRIC EXTENSION CORD WRENCHED BACK.

April 17, 1999 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalPortland Company · Over-exertion in lifting objects

LIFTING APPROXIMATELY 100LB TOOL BOX OUT OF TRUCK BED W/O LOWER TAILGATE

February 12, 1999 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalPortland Company · Struck by... (Not Elsewhere Classified)

WHILE CHIPPING AWAY CONCRETE ON CORNER OF BALL MILL W/CHIPPING HAMMER METAL CHIP FLEW IN L EYE EE STATED THAT HE WAS WEARING SAFETY GALSSES AT TIME OF INJURY

January 6, 1999 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalPortland Company · Caught in, under or between (Not Elsewhere Classified)

WHILE RAISING A METAL DOOR WITH A COMEALONG DOORSLIDE SIDEWAYS & CAUGHT FINGER BETWEEN DOOR & A BOLT ON THE DOOR FRAME

1998 · 1 incident

August 11, 1998 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalPortland Company · Struck by... (Not Elsewhere Classified)

EE WAS REMOVING THE GROUND ENGAGING TOOTH FROM THE LOADER BUCKET. EE TORCH CUT THE AREA IN BACK OF THE RETAINING PIN AND STARTED TO HIT THE TOOTH WITH A SLEDGE HAMMER. WHEN HE STRUCK THE TOOT H A PIECE OF METAL FRAGMENTED AND IMPALED IN HIS RIGHT THIGH. TOOK THE EE TO ER WHERE THE IMPALED PIECE WAS REMOVED, TWO STITCHES, RETURNED TO WORK SAME DAY.

1997 · 2 incidents

September 27, 1997 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalPortland Company · Absorption of radiations, caustics, toxic and noxious substances

EE HAS FILLED THE BATTERY IN THE VEHICLE, WENT UNDERNEATH TO LUBRICARE CHASSIS. HE FELT ACIT/WATER ENTER HIS LEFT EYE. DIAGNOSED WITH ACUTE CONJUNCTIVITIS.

April 23, 1997 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver POWERED HAULAGE
CalPortland Company · Struck against a moving object

EMPLOYEE WAS OPERATING A CAT 777 WATER TRUCK. GOING DOWN THE RAMP TO THE PIT HE TRIED TO SLOW DOWN THE TRUCK WITH THE RETARDER, SERVICE BRAKE. THE BRAKING SYSTEM FAILED, AND THE EMPLOYEE ELE CTED TO STOP THE TRUCK BY STRIKING THE FACE OF THE RAMP. THE DRIVER SUSTAINED MILTIPLE CONTUSIONS TO RIGHT KNEE, UPPER TORSO, AND SMALL LACERATION TO LOWER IP. X-RAYS WERE NEGATIVE, EMPLOYEE

1996 · 3 incidents

November 12, 1996 AZ · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
CalPortland Company · Over-exertion in pulling or pushing objects

EE PULLING ON A AIR HOSE. IT GOT STUCK AND PULLED HARD. FELT A PAIN RT SIDE GROIN AREA, DIAGNOSED AS LIGAMENT STRAIN, PLACED ON MODIFIED DUTY.

November 6, 1996 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
CalPortland Company · Struck by flying object

EE WAS GREASING THE BOTTOM PIN ON LOADER #80, STANDING BETWEEN THE BUCKET ARMS, THE GREASE FITTING WAS PLUGGED, GREASE SQUIRTED FROM FITTING, SPLASHING EE ON GLASSES AND IN HIS EYE. A FOREIGN METAL OBJECT WAS REMOVED FROM HIS LEFT EYE.

February 5, 1996 AZ · Metal/Non-Metal welder (shop) MACHINERY
CalPortland Company · Struck by falling object

SNAP RING ON HITCH BROKE ALLOWING WELDER [MACHINE] TO FALL ON ANKLE.

1995 · 1 incident

March 23, 1995 AZ · Metal/Non-Metal HANDTOOLS (NONPOWERED)
CalPortland Company · Struck against stationary object

EE WAS CLEANING OUT THE GRAVITY TAKE UP ENCLOSURE AREA. HE HAD REMOVED A GUARD AND WHILE USING A SHOVEL TO REMOVE MATERIAL HIS RT INDEX FINGER STRUCK A METAL TAB USED TO BOLT THE GUARD, CAUSIN G A LACERATION REQUIRING STITCHES AND TETNANUS SHOT.

1994 · 1 incident

December 7, 1994 AZ · Metal/Non-Metal blaster, shooter, shotfirer, explosive worker, powder gang/monkey SLIP OR FALL OF PERSON
CalPortland Company · Fall to the walkway or working surface

EMPLOYEE WAS DOING POST BLAST SURVEY. STOOD ON A ONE FOOT DIAMETER ROCK FOR A BETTER VIEW OF SHOT. EMPLOYEE TURNED AS HE WAS STEPPING OFF ROCK, CAUSING THE ROCK TO MOVE. EMPLOYEE LOST HIS BALA NCE AND FELL ON HIS LEFT HAND.

1993 · 1 incident

March 10, 1993 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS
CalPortland Company · Over-exertion (Not Elsewhere Classified)

EMPLOYEE ALLEGES HAVING SUFFERED A LOW BACK STRAIN INJURY WHILE CHANGING OUT DRIVE MOTOR BEARINGS ON B3-VS1. EMPLOYEE DID NOT REPORT ACCIDENT UNTIL 3/14/93. COMPANY ACCEPTED CLAIM ON 4/14/93 .

1992 · 1 incident

February 20, 1992 AZ · Metal/Non-Metal pumper HANDLING OF MATERIALS
CalPortland Company · Over-exertion in pulling or pushing objects

ATTEMPTING TO REMOVE COVER OFF DRUM PUSHING DRUM WITH BODY FELT PAIN IN LOWER BACK

1991 · 2 incidents

August 2, 1991 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
CalPortland Company · Flash burns (welding)

EMPLOYEE WAS WELDING ACROSS FROM ANOTHER EMPLOYEE (WELDER) WHEN HE WAS APPARENTLY FLASHED IN BOTH EYES.

July 10, 1991 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer SLIP OR FALL OF PERSON
CalPortland Company · Over-exertion (Not Elsewhere Classified)

AS EMPLOYEE ATTEMPTED TO DISMOUNT OFF OF D9 TRACTOR TRACK, SLIPPED AND CAUGHT HIS FULL BODY WEIGHT FORCEFULLY WITH HIS RIGHT ARM TO PREVENT FALLING DOWN TO BELOW.

1988 · 1 incident

March 16, 1988 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer STEPPING OR KNEELING ON OBJECT
Arizona Portland Cement Company · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS IN THE PROCESS OF DISMOUNTING FROM CATERPILLAR, STEPPED ONTO LOOSE ROCK, RIGHT ANKLE TWISTED RESULTING IN A SPRAIN.

1987 · 1 incident

January 13, 1987 AZ · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman HANDTOOLS (NONPOWERED)
Arizona Portland Cement Company · Struck by flying object

EMPLOYEE WAS HO5DING PUNCH WHEN IT WAS STRUCK BY ANOTHER EMPLOYEE WITH SLEDGE HAMMER A STEEL CHIP BROKE OFF OF PUNCH AND STRUCK EMPLOYEE

1986 · 1 incident

May 27, 1986 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS
Arizona Portland Cement Company · Over-exertion (Not Elsewhere Classified)

EMPL ATTEMPTING3TO COUPLE HOSE WHILE REACHING OVERHEAD FELT PAIN IN LEFT LOWER BACK.

1984 · 1 incident

October 11, 1984 AZ · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator POWERED HAULAGE
Arizona Portland Cement Company · Fall from machine

DRIVING MOTORCYLE AND WENT OFF CO ROAD ONTO SOFT SHOULDER TO ALLOW TRUCK TO PASS AND HE LOST CONTROL OF HIS MOTORCYCLE.

For insurers, brokers, and safety consultants

The full compliance file on RILLITO 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.