美国五大湖工业区位分析 Industrial Location: Transport Characteristics(Bulk-Reducing) MESABI RANGE Early 190 Late C 1800s Mid 1800s Mid Late o 1900s 1900s 35° APPALACHIAN PACIFIC BASIN OCEAN INTERIOR BASIN Operating ATLANTIC OCEAN Closed since 1975 Location of new steel mills 400 MILES Major iron ore deposit 0 200 400 KILOMETE Major bituminous 75 coal depositIndustrial Location: Transport Characteristics (Bulk-Reducing) 美国五大湖工业区位分析