The Mineral Industry, Volume 29

acid alloys American amount anthracite antimony average bituminous coal blast-furnace Canada cement cent charge cobalt coke compared concentrates consumption containing copper cost crucibles crude cyanide decrease demand deposits district domestic electrolytic estimated exports field figures fluorspar following table foreign France fuel fuller's earth furnace Germany gold grade graphite gross tons gypsum important included increase industry iron and steel Jour Lake leaching lead lignite long tons magnetite manufacture material matte metal metric tons Mexico miles mill mineral mines Molybdenite molybdenum monazite months nickel operations Ounces output oxide phosphate pig iron Pittman Act plant platinum potash Pounds precipitation quantity refined refinery reported Rept reverberatory rock shipments shipped short tons silver slag smelter Smelting South stocks sulphate sulphide sulphur supply Surv tion tonnage Tonopah tons valued total production U. S. Geol United zinc