Ch. 1: Gold and Silver in 1905

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	180	MINERAL RESOURCES.

	New York prices, and it should be distinctly stated that the miners do not by any means obtain these prices from the custom smelters. Hence, the columns giving the amounts in dollars are in a way misleading; but it has been thought best to give the tables this form, for to most persons a relatively more distinct conception is conveyed by statements in terms of dollars than in terms of pounds. The standard unit for ore production is the short ton of 2,000 pounds. PRODUCTION OF GOLD AND SILVER REPORTED FROM THE MINES. The following table gives the quantity and value of gold and silver reported by the producing mines to the officers of the United States Geological Survey. The last column in the table gives the increase or decrease in value as compared with the mines report of the preceding year as recorded in Mineral Resources for 1904. Production of gold and silver" in the United States in 1905, as reported from the miners to the United States Geological Survey, by States and Territories. [Pine ounces.]



	ORE PRODUCTION, NUMBER OF MIXES, AND AVERAGE VALUES. The wonderful development of the mining industry in 1905 is clearly indicated in the tonnage handled by the mines. The following table shows the number of mines, the ore production, and the average values. To illustrate fully the advance in the various branches, the tonnage should be further subdivided into classes of ore.

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