Twice in recent months, Dallas-based TXI was honored by the U.S. Environmental Protection Agency (EPA) for programs reducing greenhouse gas emissions. In September 1999, the company received EPA's 1999 Climate Protection Award for its CemStar process, which uses slag, a byproduct of the company's steel-making process, in its adjacent cement facility. Each ton of slag produces a ton of clinker and reduces carbon dioxide emissions by a ton.

In November 1999, the company was awarded the Climate Wise Award for its CemStar process, but also for reducing off-road vehicle miles and electrical usage, and for creating a recycled fuel program that recovers energy from petro-chemical processing and manufacturing byproducts.