NRMCA's celebration of the 100th anniversary of ready mixed concrete in the U.S. continues in E-NEWS this month with the histories of another Producer and Associate member. See below for the two companies we've selected for this week, along with a link to that company's respective Web site for more information. This week's industry milestone: NRMCA’s first publication, Estimating Quantities for Concrete was published in 1931, written by NRMCA’s first director of engineering, Stanton Walker.

Concrete Supply - Concrete Supply was formed in 1958 through the merger of three ready mix companies with a total of four plants, all located in Charlotte, NC. From that beginning, Concrete Supply now operates more than 30 plants in North and South Carolina. In 1999, company management decided to expand in its primary metropolitan areas. To accomplish this, over the last eight years Concrete Supply has acquired ownership or majority interest in several companies. Read more.

An NRMCA Producer member since 1958

CTL Group - This Associate member began in 1970 as the research and development arm of the Portland Cement Association. Over the past 40+ years, the firm's expertise has been sought on a variety of high profile U.S. investigations, including the September 11 terrorist attacks at the World Trade Center in New York and the Minneapolis I-35 bridge collapse. Read more (look for slide show and start at 1970).

An NRMCA Associate member since 2011