Mesabi Multiple

MARSDEN, R.W. ESTIMATION AND EVALUATION OF THE IRON ORERESERVES OF THE UNITED STATES - A PARTIAL SURVEY 1974-1975. IRON ORE RESERVES OF THE MESABI RANGE, MINNESOTA,A MINERALS AVAILABILITY SYSTEM REPORT. BUMINES OFR109-80, 1980, 81 PP.; NTIS PB 80-228984.MARSDEN, R.W., J.W. EMANUELSON, J.S. OWENS, N.E. WALKER, ANDR.F. WERNER. THE MESABI IRON RANGE, MINNESOTA. CH. INORE DEPOSITS OF THE UNITED STATES, 1933-1967, V. 1, ED.BY J.D. RIDGE, AIME, NEW YORK, 1968, PP. 518-537.MINERAL RESOURCES RESEARCH CENTER. MINNESOTA MININGDIRECTORY - 1981. ED. BY W.D. TRETHEWAY. UNIV. OFMINN., 1981, 266 PP.DIRECTORY - 1981, ED. BY W.D. TRETHEWAY. UNIV. OFMINN., MINNEAPOLIS, MINN., 1981, P. 222.