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alloys aluminum amounted antimony average value body bullion cadmium California carbonate carried cent chromite compared concentrates considerable containing continued cost County Creek crude cyanidation decrease deep mines deposits district domestic dredges estimated exports feet figures foreign furnaces galena Geological given gold and silver grade gross tons Hill imported included increased industry iron Lake largest lead less long tons manganese manufacture material metal Michigan miles mill Mineral Missouri months Mountain nearly Nevada nickel North obtained occur opened operated ounces of silver output oxide placer plant pounds of copper pounds of lead principal production Quantity recovered recovery refined region reported result rock Salt shaft shipments shipped short tons shows siliceous small quantity smelter smelting sold sources South steel sulphide supply Survey tailings tion total value treated United yielded zinc
Page 8 - ... zinc minerals and ores, in nearly all of which it occurs ,in at least minute proportions, the average ratio being about 1 of cadmium to 200 of zinc. As cadmium behaves metallurgically much the same as zinc, it constitutes a fraction of 1 per cent of nearly all metallic zinc. -. Cadmium is produced in the United States in two forms — metallic cadmium and the pigment, cadmium sulphide. The principal use of the metal is in low-melting point, or cliche alloys, and its salts are utilized in the...
Page 652 - ... regarding the policy of the rejected treaties as finally abandoned, and considering the removal of the Indians from the State as impossible, I suggest, as worthy of consideration, the plan of forming them into two grand colonies, to be suitably located : one in the northern and the other in the southern portion of the State.
Page 104 - ... is also true that there are scattered areas where more or less mining has been done all the way between the northwest end of this belt and the Joplin region, so that, strictly speaking, the lead and zinc deposits of Missouri practically form a zone around the northern half of the Ozark dome. A brief description of the ore deposits in central and southeastern Missouri is given in the separate chapter entitled " Silver, copper, lead, and zinc in the Central States in 1915...
Page 558 - The following tables showing the production of steel were compiled by the bureau of statistics of the American Iron and Steel Institute. No data whatever are available on the value of the output of crude steel at the mills, but the weekly issues and annual statistical reviews of...
Page 45 - ... compositions used for fuel in which coal or coal dust is the component material of chief value, whether in...
Page 83 - developed, the quantity of " rock " stamped, the copper recovered per short ton of "rock" stamped, and the cost of production are based on the published reports of the companies. In the few cases in which reports are not published a general statement of the character of operations is made from the best information available.
Page 859 - ... reasonably accurate distribution and also furnish the actual recovery of copper from the ores treated during the year; the refinery figures furnish the best measures of the copper made available for commercial uses during the year, but at this stage of manufacture the accurate distribution to the State of origin, or even the separation of copper derived from domestic and from foreign sources, is uncertain. Statistics for...
Page 519 - State, and the different varieties of ore are to a large extent locally segregated, so that statistics of production by districts are of more general interest and importance than statistics by States. The Lake Superior district, comprising...
Page 485 - PRODUCTION. GENERAL STATEMENT. The value of the mine production of gold, silver, copper, lead, and zinc in Washington in 1918 was $1,467,421, a decrease of nearly 36 per cent from that of 1917.
Page 105 - Copper, nickel, and cobalt also occur in the ore, in considerable quantity in the vicinity of Fredericktown. and in small quantity, irregularly in nearly all the deep mines. It is only near Fredericktown that the copper, nickel, and cobalt content, of the ore has been the object of mining, yet a concentrate of these metals has been recovered as a table middling at several plants in other parts of the district, and...