| Reference | {Deposit:: PERSONAL CORRESPONDENCE, ERIK LINDFORS, MANAGER OF MINING,}{Deposit:: SKF STEEL, GRUVORVALTHINGEN, S-81300 HOFORS, SWEDEN,}{Deposit:: 1978.}{Deposit:: STAFF, 1978 ENGINEERING AND MINING JOURNAL INTERNATIONAL}{Deposit:: DIRECTORY OF MINING AND PROCESSING OPERATIONS, MCGRAW-}{Deposit:: HILL, NEW YORK, 1978, P. 350.} |