RAMP, LEN, 1978 , INVESTIGATIONS OF NICKEL IN OREGON: ODGMI MISC. PAPER NO. 20 , P. 35 - 371968 DIREXPL COMINCO-AMERICAN, INC. TRENCHING, AUGERING; MAPPING BY AREAL PHOTOGRAPHY.1973 DIREXPL INSPIRATION DEVELOPMENT COMPANY EXTENSIVE EXPLORATION1977 DIREXPL USBM BACKHOE SAMPLING