Founded in the 1930s, Mueller, Inc. was purchased from the Mueller brothers in 1984 by the Davenport family. Since that time, Mueller has undergone rapid expansion to become a leading manufacturer of pre-engineered metal building and residential metal roofing products. Today, with 600 employees and annual revenue in excess of $200m, Mueller primarily serves the central and southwest U.S. markets from 28 distribution and 3 manufacturing locations. Over the last few years, the U.S. steel industry has undergone dramatic change.