01721oam 2200421 450 991070680260332120180323112149.0(CKB)5470000002459447(OCoLC)896810578(OCoLC)995470000002459447(EXLCZ)99547000000245944720141123d1978 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierComputer-aided estimates of concentrating-grade iron resources in the Negaunee Iron-formation, Marquette District, Michigan /by W.F. Cannon, Sandra L. Powers, and Nancy A. WrightWashington :United States Department of the Interior, Geological Survey,1978.1 online resource (iii, 21 pages) illustrations, mapGeological Survey professional paper ;1045Title from title screen (viewed October 6, 2014)."An estimation of the magnitude, quality, and economic potential of subeconomic resources of iron in an important active mining district."Includes bibliographical references (page 21).Iron oresMichiganMarquette CountyData processingIron oresData processing.Cannon William F.1385819Powers Sandra L.Wright Nancy A.Geological Survey (U.S.),COPCOPOCLCOGPOBOOK9910706802603321Computer-aided estimates of concentrating-grade iron resources in the Negaunee Iron-formation, Marquette District, Michigan3542855UNINA