The copper era., 1908-12-17
Arizona Mine Operations For Year 1907.

The mine operators of Arizona re- ported to the United States geologi- cal survey for the calendar year 1907 production of gold, silver, copper lead and zinc valued at S55, ,5ll ,560, Of this total the value of the copper output constitutes 92 per cent. for the production of that meta amount ed to 54,S79, ,4S9 pounds, having a commercial value of $50, 1915, ,S9S. All though this copper output is nearly 12,OOO,00O pounds in quantity and more than $500, 1000 in value less than that of the proceeding calendar year, it exceeds the record of Mon tana for 1907 by nearly 35.OOO, 900 pounds in quantity and S7,000, ,O00 in value, and places the territory first among the copper producers of the country.
 Gold was second in value in tt e | territory in 1907, the output amount ing to 126,6I2 5 fine ounces, valued at S1, ,617, ,3l3, and silver third, with an output of 2,5l1,S79 fine ounces, valued at S1, 1,657, 1852. The lead pro- duction was valued at S247, ,0l6, and the zinc at S13,4Sl.
 Eleven of Arizona's $ thirteen coun- ties reported an output of the metals, the producers numbering 437. The territory has eleven smelling plants two in Cochise county, two in Gila, three in Graham, one in Pima, one in Santa Cruz, aud two in Yavapai. All these smeIters treated copper ores, and five of them did a custom business, besides treating ores from their own properties. About S per cent. of the smelting ore was treated at smelters connected with the mines; the rest was mainly lead ore and was shipped to outside smelling plants.
 The ore production of Arizona in 1907 amounted to 3,567, ,133 short tons, including a relatively small quantity of old tailings and slag. Compared with that of 1906, the production de- creased in quantity 17,956 tons and in value per ton from SI5.83 in the earlier to $15.55 in the later year. The production of silicious ores in- creased from 272.6lI tons in 1906 to 357 ,005 tons in 1907. The greatest quantity of this kind of ore was pro- duced in COchise county. The cop per ore production increased from 3,0S9,S56 tons in 1906 to 3,19l, ,I25 tons in 1907, Graham county leading and Cochise county following. The pro- duction of lead ore decreased from 22l,3 tons in 19)6 to 17,3j4 tons in 1907. The average value per ton of gold and silver in silicious ore in 1907 was s6.47; as against S6.33 in 1906; in copper, 5 cents, as against 79 cents in 1906; in lead ore, S573, as against S3.49 in 1906: and in copper-lead ore, sl5.2O, as against S7.9i in 1906.
 A detailed report on the miue pro- ductiOn of these metals in Arizona prepared by V. c. Heikes, of the United States geological survey. is now in press as part of an advance chapter from "Mineral Resources of the United States, Calendar Year 1907, on the production of gold, Sil- yer, copper, lead and zinc in the western states; and this chapter it. self is one of three which collective ly treat in comprehensive manner the production ot these metals for the whole country. The chapter on mine production for the eastern states is now ready for distribution; that on the central states is in preparations: and that on the west ern states will be ready for distribu- tion in a few weeks. Copies may be obtained free of charge by applying to the director of the geological sur vey, Washington, D. c.