Lyman-Richey Corporation is based in Omaha, Nebraska and supplies ready mixed concrete, sand, gravel and related construction materials through its operating companies to customers in Nebraska, Iowa and Colorado. Since its establishment in 1884 as Lyman Sand Company in Lawrence, Kansas, the company has grown to operate in over 40 permanent locations with approximately 700 employees.

Lyman-Richey Corporation is a subsidiary of the Ash Grove Cement Company.