lbnl 41724 energy efficiency and carbon dioxide emissions reduction opportunities in the us iron steel sector ernst worrell nathan martin lynn price environmental technologies division july 1999 this work was supported by climate protection office of air radiation agency through department under contract no de ac03 76sf00098 51 67 25 1 2 5 1& 7 21 725 disclaimer document prepared as an account sponsored united states government while is believed to contain correct information neither nor any thereof regents university california their employees makes warranty express or implied assumes legal responsibility for accuracy completeness usefulness apparatus product process disclosed represents that its use would not infringe privately owned rights reference herein specific commercial service trade name trademark manufacturer otherwise does necessarily constitute imply endorsement recommendation favoring