Ch. 1: Gold and Silver in 1919

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	GOLD AND SILVER.	679

	The largest output of silver was that of the Anaconda Copper Min-in'g Co. Six of the 25 mines enumerated in the subjoined list recovered silver from copper ore, 11 from lead ore, 6 from dry or siliceous ore, and 2 from zinc-lead ore. The Presidio mine in Texas 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 25,020,000 ounces, or slightly less than half of the total production of silver in the United States in 1919, as against 53 per cent in 1918. Six of the largest producers were in Utah, five each in Montana and Idaho, and four in Nevada.



	It is estimated that the total production of gold in Alaska from the earliest mining, in 1880, to the end of 1919 has been $311,664,993, of which $218,012,992 has come from placers. The total production of silver has been 9,019,016 fine ounces, of which 5,815,886 ounces was recovered from copper ores and 1,774,550 ounces from the refining of placer gold.³ Gold.—The mine production of gold in Alaska in 1919 was $9,426,032, or about $54,920 less than that of 1918. The yield from siliceous ores increased from $3,473,317 in 1918 to $4,392,237 in 1919; the yield from copper ores decreased from $107,635 in 1918 to $63,795 in 1919; the placer output in 1919 was $4,970,000 against $5,900,000 in 1918. Twenty-eight dredges produced $1,360,000 of the placer gold, which was $65,000 less than the yield from dredging in 1918. » U. S. Geol. Survey Mineral Resources, 1919, pt. 1, pp. 227-233,1921.

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