RALEIGH, N.C.--(BUSINESS WIRE)--Martin Marietta Materials, Inc. (NYSE:MLM) today announced that it has completed its acquisition of Texas Industries, Inc. (NYSE:TXI), creating a market leading supplier of aggregates and heavy building materials. The transaction enhances Martin Marietta's position as an aggregates-led, low cost operator in the perennially largest and fastest growing geographies in the United States. With a leading U.S. aggregates position, the acquisition provides complementary,