| Reference | {Production:: ALUMINUM PRODUCTION COST SURVEY, 1980-1985 BROOK HUNT AND}{Production:: ASSOCIATES LTD. PG. 274 (RECORDS 1-4, 9-10)}{Production:: ALUMINUM PRODUCTION COST SURVEY, 1988 BROOK HUNT AND ASSOC-}{Production:: IATES LTD. PG.2.22(RECORDS 5-8,11-13)} |