← Back to search

Diablo Plant # 136 Metal/Non-Metal

CalPortland Company · Surface

Controlled by Taiheiyo Cement Corp

Coolidge, Pinal County, AZ · Active

MSHA Mine ID: 0203350

Watch this mine

Email me when a new MSHA incident is filed at Diablo Plant # 136.

Fatalities: 0
Total incidents: 3
Years on record: 2015–2017
Latest incident: Apr 2017

Compliance record

MSHA citations since 2015

citations

significant & substantial

$11,988

proposed penalties

$11,988

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	5,990	0	0	0.0
2025 Q2	600	0	0	0.0
2025 Q1	7,043	0	0	0.0
2024 Q4	6,963	0	0	0.0
2024 Q3	7,748	0	0	0.0
2024 Q2	506	0	0	0.0
2024 Q1	7,508	0	0	0.0
2023 Q4	7,719	0	0	0.0

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

Reportable incidents

3 on file

2017 · 1 incident

April 7, 2017 AZ · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer HANDLING OF MATERIALS

CalPortland Company · Struck by... (Not Elsewhere Classified)

EE was moving a piece of plate steel to gain access to timber to place under load of new steel shipment. EE lifted the approximately 3' x 5' by 3/8 inch steel the long way and pushed over to the side 180 degrees. The steel plate hit an approximately 18" high steel beam and kicked back striking the EE's heel causing EE's heel bone to break in hairline fractures

2016 · 1 incident

November 18, 2016 AZ · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDLING OF MATERIALS

CalPortland Company · Caught in, under or between a moving and a stationary object

Employee used poor hand placement while getting off of VSI lid EE was repairing. Employee was also not wearing gloves during the time of injury. Poor hand placement on pivot point while getting off of equipment caused left pinky to get caught between VSI lid and attach point. The result was employee fracturing the tip of the right pinky finger.

2015 · 1 incident

July 23, 2015 AZ · Metal/Non-Metal washer operator, sizing operator SLIP OR FALL OF PERSON

CalPortland Company · Caught in, under or between a moving and a stationary object

Employee was removing a broken impeller from pump shaft. A cheater bar was connected to a wrench when the wrench slipped and the employee fell to the ground and his hand was caught between cheater bar and the concrete pad, fracturing the right ring finger.