Ready-mix drivers represented by Teamsters Local 313 at Glacier Northwest, a CalPortland company, have reached the one-month ...

The company said the layoffs take effect June 15 and are temporary as the company will reassess market conditions going ...

BETHESDA, Md., Jan. 30, 2026 /PRNewswire/ -- CalPortland Company is proud to announce it has achieved Wildlife Habitat Council (WHC) Conservation Certification, powered by Tandem Global, for its ...

GLENDORA, CA--(Marketwired - September 19, 2016) - CalPortland is proud to announce and celebrate its 125 Year Anniversary on September 21, 2016. The company was established in 1891 in Colton, CA as ...

GLENDORA, Calif., April 15, 2011 (GLOBE NEWSWIRE) -- CalPortland Company has accepted the 2011 ENERGY STAR Sustained Excellence Award from the U.S. Environmental Protection Agency (EPA) in recognition ...

Living in the shadow of the CalPortland cement company, the tiny community of Rillito has celebrated Christmas in a special way for the past nine years, thanks to a brainstorm of one of the cement ...

WASHINGTON, DC--(Marketwired - April 27, 2017) - The U.S. Environmental Protection Agency (EPA) has presented the 2017 ENERGY STAR Partner of the Year - Sustained Excellence Award to CalPortland for ...

A federal court on Monday rejected efforts by some companies, aided by state officials, to void air quality requirements imposed by the U.S. Environmental Protection Agency. In an extensive ruling, ...

GLENDORA, Calif., March 18, 2011 (GLOBE NEWSWIRE) -- The U.S. Environmental Protection Agency (EPA) has awarded CalPortland Company a 2011 ENERGY STAR Sustained Excellence Award in recognition of its ...