TXI, formerly Texas Industries, is a wholly owned subsidiary.

The company was focused on the production of heavy construction materials in the southwestern United States market (e.g. Texas and California).

Until 2012, Texas Industries owned 82 manufacturing facilities in six states.

[2][FN 1] In January 2014, Martin Marietta Materials (MLM), a rival provider of construction materials, agreed to buy TXI for $2.06 billion in stock.

Chaparral Steel was spun off from TXI and later purchased by Gerdau in 2007 for $4.2 billion.