Twenty-seven portland cement operations are among 70 manufacturing plants to achieve Environmental Protection Agency Energy Star certification in 2015. Producers recognized for achieving energy performance in the top 25 percent of the industry are Holcim (five plants); Buzzi Unicem, Cemex USA and Lehigh Cement (four plants); Argos USA, Essroc Cement and Titan America (two plants); plus, Ash Grove Cement, CalPortland Co., Martin Marietta Materials, Salt River Materials and Suwannee American (one plant).
Powder mills keep lead in Energy Star-certified manufacturing plant census
