Ch. 1: Gold and Silver in 1918

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	GOLD AND SILVER.	747

	The largest output of silver was that of the Anaconda Copper Mining Co. from copper ores. The Chief Consolidated Mining Co., of Utah, which had the second largest output of silver, derived the silver from lead ores; and the Butte & Superior Mining Co., the third largest producer, derived the silver from lead-zinc ores. The Tono-pah Mining Co., which held eighth place, was the largest producer from siliceous ores. Seven of the 25 mines enumerated recovered silver from copper ore, 11 from lead ore, 5 from dry or siliceous ore, and 2 from zinc-lead ore. Several mines yielded more silver than the Presidio mine in Texas, but it was the largest producer of silver from ore that contained no appreciable quantity of any other metal. The approximate output of the 25 properties was 36,250,000 ounces, or about 53 per cent of the total production of silver in the United States in 1918. Larger producers of silver in the United States in 1918, in order of output.



	MINE PRODUCTION OF GOLD AND SILVER, BY STATES. ALASKA. It is estimated that the total production of gold in Alaska from earliest mining, in 1880, to the end of 1918 has been $302,238,961, of which $213,042,992 has come from placers. The total production of silver has been 8,389,308 fine ounces, of which 5,327,852 ounces was recovered from copper ores and 1,741,567 ounces from the refining of placer gold.¹ Gold.—The mine production of gold in Alaska in 1918 was $9,480,952, or about $5,170,000 less than that of 1917. The yield from siliceous ores decreased from $4,581,453 in 1917 to 13,473,317 in 1918; the yield from copper ores decreased from $265,900 in 1917 to $107,635 in 1918; the placer output in 1918 was $5,900,000, against » U. S. Geol. Survey Mineral Resources, 1918, pt. 1, pp. 127-128,1919.

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