Article Photos: M-D Building Products buys manufacturing firm

Elsa Caldcrow works on production of products at the MD Building Products plant on Wednesday, Jan. 2, 2013, in Oklahoma City, Okla. Photo by Chris Landsberger, The Oklahoman

Elsa Caldcrow works on production of products at the MD Building Products plant on Wednesday, Jan. 2, 2013, in Oklahoma City, Okla. Photo by Chris Landsberger, The Oklahoman