Gramercy Alumina LLC Ownership Century Aluminum - 50% Noranda – 50% Location P.O. Box 3370, 1111 Airline Highway, Gramercy, LA 70052 Telephone (225) 869-2100 Employment 490 Employees Alumina capacity 1.2 million tonnes per year Smelter grade alumina (SGA) – 80% Chemical grade alumina (CGA) – 20%