Ch. 1: Gold and Silver in 1906

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	GOLD AND SILVER.	113

	The greatest gains took place in Utah (1,188,200 ounces), Idaho (710,600 ounces), California (435,500 ounces), and Arizona (363,500 ounces). The increased price for silver during the year, however, in some cases brought about the seemingly contradictory result that a decrease in production—as, for instance, in Montana and Colorado—corresponded to an actual increase in the value of the product.

	PRODUCTION OF GOLD AND SILVER IN UNITED STATES SINCE 1880. The following table, from the report of the Director of the Mint on the production of gold and silver, shows the quantity and value of these metals produced in the United States since 1880: Production of gold and silver in the United States from 1880 to 1906, inclusive.



	MINES REPORT.

	By Waldemar Lindgren.

	METHOD OF COLLECTING STATISTICS. It should be distinctly understood that the table on page 5 contains the figures of the production of gold and silver which are accepted as final by the Geological Survey, inasmuch as they record in the main the quantities of these metals which were actually produced during the calendar year. It is difficult to trace the refined metals back to the States where the ore was produced, and it is still more difficult to trace them back to producing counties and districts. In order, therefore, to ascertain the state of the mining industry in each mining camp, the Geological Survey asks from each mining property the amount of gold and silver, as well as that

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