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Cement

How often should the air ducts in your home be cleaned?

How often should the air ducts in your home be cleaned?

It’s a process that should be done every eight to 10 years.

February 21, 2015 2:12 pmLoading…
Backdrop of O'odham recycling project: alcoholism

Backdrop of O'odham recycling project: alcoholism

Collecting bottles, a researcher and community college student address problems of reservation.

October 21, 2014 10:00 pm Photos

Photos

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Recycled bottles help rebuild reservation, one man's life

Recycled bottles help rebuild reservation, one man's life

Research project to create cement is helping rid desert of glass bottles. 

October 20, 2014 9:00 pm Photos

Photos

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Workers exposed to cement powder in Tucson plant accident

Workers exposed to cement powder in Tucson plant accident

Workers at a northwest-side cement plant were exposed to cement powder Monday morning when a silo valve malfunctioned and dumped the material onto them. 

October 28, 2013 7:58 am Photos

Photos

Construction of the Berlin Wall

Construction of the Berlin Wall

An East German worker lays some of the first stone blocks of the Berlin Wall, August 1961, shortly after the border between East and West Berlin was sealed. (AP Photo)

August 13, 2013 12:00 am

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