Show california METAL OUTPUT the mine output of gold silver copper coppe and load lead in california in 1910 had a value of according to figures compiled by charles G yale and just made public by the united states geological survey the production of gold was 19 that of silver fine file ounces valued at that of copper 7 pounds valued at and that of lead pounds valued a at t 3 these figures show a decrease in the output of gold silver and copper as compared with the figures for 1909 but a larl large e increase in lead the 1909 figures are as follows f gold silver 2098 ounces valued at copper pounds valued at lead pounds valued at there were 1079 mines producing gold silver copper or lead in california in 1910 of which were gold placer mines of the deep mines were gold mines 9 were silver mines 10 were silver lead mines and 11 were copper mines of the placer producers were hydraulic mines mine 72 were dredges operated by 41 companies were drift mines in ancient river gravels and were sluicing mines iaea measured 3 by the number of producers as well as by tonnage and metal output deep mining in decreased somewhat in california in 1910 among the placers sluicing d decreased also but dredge and drift mining increased 1 in 1910 there were short tons of ore from deep mines sold or treated in california with an average total recoverable value of per ton against 0 3 tons in 1909 with an average recoverable value of of the total recovered value in ores in 1910 milling ores yielded in gold and silver and smelt ing ores yielded in gold and silver in copper and in hi lead placers produced in gold of which was from hydraulic mines from drift mines from dredges and from sluicing mines the yield from dredges alone being over 38 18 1 9 per cent of the total gold output from all sources in california in 1910 gold dredging has been of constantly increasing importance in california since 1899 when the yield from this source was in 1910 it was the total gold output by dredges in ill california to the end of 1910 was the three great dredging fields are those of yuba sacramento and butte counties of which the yuba county field showed an increased output of in 1910 while the production from butte county di decreased 8 and that of Sacra memo county decreased the following table gives the mine production of california by counties in 1910 of the total gold placers furnished 2469 from butte county of which 21 1 was from dredges rom sacramento county of which was from dredges and from yuba county of which was from dredges dredges also produced in calaveras talaveras Cala veras county 21 1 aso in merced and stanislaus counties combined and in siskiyou you county Hydra hydraulic ulc placers produced in gold old from sis ciyou county and from trinity county drift mines produced in placer gold in nevada county and in placer county surface or sluice placers produced in plumas county 2233 39 in siskiyou you county and in yuba county and smaller amounts of gold in n most lost of the other producing counties of the state the largest increases in gold production by counties in california were in amador in mono 36 J in sierra and in yuba the largest decreases were in butte in calaveras talaveras Cala veras in IIa mariposa in nevada in sacramento and in tuolumne the mother lode in amador calaveras talaveras Cala veras eldorado mariposa and tuolumne counties produced short tons of ore in 1910 with a total recovery in gold and silver valued at 4 or an average of per ton against short tons yielding 4 an average of per ton ill 1909 |