The quicksilver resources of California . - in the form of barrels. Thoseat the New Idria coarse-ore furnace have a diameter of 8 feetand are 14 feet long. Similar wooden barrel condensers arealso used at the Karl mine, Oceanic mine, etc. The greatdifficulty with these stave constructions lies in the iron bands,which are corroded, especially in the lower half of the circle, METAIXURGY, 253 which at the New Idria have been replaced, as an experimentby wooden bands made of wheel felloes. At the Corona mine a wooden box has been erected betweenthe fifth brick condenser and the flue to smokestack.
The quicksilver resources of California . - in the form of barrels. Thoseat the New Idria coarse-ore furnace have a diameter of 8 feetand are 14 feet long. Similar wooden barrel condensers arealso used at the Karl mine, Oceanic mine, etc. The greatdifficulty with these stave constructions lies in the iron bands,which are corroded, especially in the lower half of the circle, METAIXURGY, 253 which at the New Idria have been replaced, as an experimentby wooden bands made of wheel felloes. At the Corona mine a wooden box has been erected betweenthe fifth brick condenser and the flue to smokestack. Thisbox is IOC feet long and traversed by 8-inch tile pipes for air. Fig. 94. Soot-Cleaning Machine. circulation, in order to cool the fumes. [See Fig. 93.] Theblower is between the fifth condenser and this box. In the smaller mines the soot is still worked by hand as de-scribed by Egleston [above cited, page 810, and vol. XIV, page230], but in the larger mines, soot machines are used. [SeeFig. 94.] Generally the residue is treated in retort furnaces,but at New Almaden the residue is re-charged in the fine-orefurnace. ELEVATIONS. Elevations for which no authorities are given are from barometrical observationsduring field work for the Quicksilver Bulletin, by Wm. Forstner, Field Assistant. COLUSA COUNTY. Feet. Central mine—Main tunnel 1675 Divide between Colusa and Lake counties, at crossing of road from Sulphur Creek to Abbott mine 2125 Elgin mine—Main tunnel 2275 Empire mine—Tunnel at southeast end 1715 Tunnel in Sulphur Creek 1475 Manzanita mine—Shaft 1950 Sulphur Creek—Blank Springs Hotel 1575 Schoolhouse 1525 Wide Awake mine—Office 1600
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectminesandmineralresou
