Welcome to the Keystone Cement Company.
Keystone Cement manufactures quality
Keystone is proud of its commitment to environmental responsibility and its relationship with the local community. Our employees are active citizens in the
In January 2006 our parent company, Cementos Portland Valderrivas, announced plans to invest $165,000,000 in our plant. This investment will bring the latest in cement making technology to our plant and make us a leader in the region.