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Ch. 1: Gold and Silver in 1914

Ch. 1: Gold and Silver in 1914 Page of 97 Ch. 1: Gold and Silver in 1914 Text size:minus plus Restore normal size   Mail page  Print this page
GOLD AND SILVER.
857
Source of mine, •production of silver in 1914 in States and Territories, as reported from the wines to the United States Geological Survey, by kinds of ore and by States, in fine ounces, a
PLACERS.
The output of silver from the refining of placer gold was 152,128 fine ounces in 1914, against 123,739 ounces in 1913. The production is chiefly from Alaska and California.
DRY AND SILICEOUS ORES.
The mine production of silver from dry and siliceous ores in 1914 was 27,812,335 fine ounces, against 28,010,875 ounces in 1913. More than half of this was from Nevada (chiefly from the Tonopah dis­trict) and a large output was also made from Colorado (mainly from the Leadville, Upper San Miguel, and Sneffels districts). New Mexico, Arizona, and Utah also each produced more than 1,000,000 ounces of silver from this source.
A large part of the silver from gold-silver siliceous ores is obtained with the gold by amalgamation and cyanidation in the mills, and the sdver is recovered by refining the null bullion. The remainder is produced by smelting the richer ores and refining the copper or lead bullion produced.
Ch. 1: Gold and Silver in 1914 Page of 97 Ch. 1: Gold and Silver in 1914
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US Geol. Surv. 1914. Gemstones, Metals.
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