NRMCA's celebration of the 100th anniversary of ready mixed concrete in the U.S. concludes its submissions for November - see below for this week's Producer and Associate member Web site links. This week's industry milestone: Lightweight concrete was pumped to a record-breaking 1,038 feet above ground in a single lift during the 1989 construction of the 75-story First Interstate World Center in Los Angeles.

R.W. Sidley, Inc. - R.W. Sidley, Inc. was established in 1933 as a mining and manufacturing company. Since then the company has grown and evolved into a producer and supplier of bulk aggregates, industrial minerals, ready mixed concrete, masonry block products, structural and architectural precast components, and building supplies. Read more.

An NRMCA Producer member since 1991

Power Kleen Corporation - Over the past 38 years, the Jamson Labs/Power Kleen family has grown from one salesman with one product and one customer in 1973 to more than 75,000 square feet of corporate facilities, distribution points nationwide and a family of more than 50 employees and 30 salesmen. Read more.

An NRMCA Associate Member since 2011