| Reference | {Production:: ALUMINUM PRODUCTION COST SURVEY, 1980-1985 BROOK HUNT AND}{Production:: ASSOCIATES LTD. PG.308 (RECORDS 1,6)}{Production:: ALUMINUM PRODUCTION COST SURVEY, 1988 BROOK HUNT AND ASSOC-}{Production:: IATES LTD. PG.2.37 (RECORDS 4-5,7)} |