Mining Incidents

RILLITO QUARRY Metal/Non-Metal

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

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Fatalities
0
Total incidents
9
Years on record
2000–2020
Latest incident
Feb 2020
Compliance record
MSHA citations since 2002
92
citations
15
significant & substantial
$26,101
proposed penalties
$21,948
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
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 8,467 0 0 0.0
2025 Q1 8,793 0 0 0.0
2024 Q2 1,440 3 0 2083.3
2024 Q1 10,882 0 0 0.0
2023 Q4 8,982 2 0 222.7
2023 Q3 9,196 0 0 0.0
2023 Q2 9,867 2 0 202.7
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

9 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.