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Alaska amount analyses average basalt blast furnace bodies British Columbia Brown cent iron cent of iron Chile China Columbia County concentrate contain copper cost County deposits occur deposits of iron diorite distance district east estimated feet flux gangue hematite high grade Hill igneous Important deposits industry iron and steel iron content iron ore deposits iron-ore Japan Kasaan known Lake large deposits lenses Lime limestone limonite located low grade magnetic separation magnetite manganese metallic iron million tons minerals mining Mount Andrew northwest orebody Oregon outcrops Pacific Coast phosphorus pig iron porphyrite port probably production Provo Pueblo pyrite quantity railroad reserves rH rH River rocks sample Scappoose shipped silica sintering smelter smelting Stevens County Stevenstown sulphides sulphur surface Texada island tion tonnage trace transportation Trench tunnel Utah Valley veins Washington