Bulletin . ssaying up to 4%, which were mixedwith the mine-run ore. A second Herreschoff furnace was installed in 1916, at the Goldbankquicksilver mine, near Winnemucca, Nevada. It is stated to have beenin successful operation for a number of months up to June, 1917, when 254 CALIFORNIA STATE MINING BUREAU. the plant was destroyed by fire. No special appliances were added totake care of dust, from which it is inferred that the Goldbank oreyielded too small an amount of dust to interfere with W. G. Adamson, president of the company, states that such wasthe ease, as the ore is a
Bulletin . ssaying up to 4%, which were mixedwith the mine-run ore. A second Herreschoff furnace was installed in 1916, at the Goldbankquicksilver mine, near Winnemucca, Nevada. It is stated to have beenin successful operation for a number of months up to June, 1917, when 254 CALIFORNIA STATE MINING BUREAU. the plant was destroyed by fire. No special appliances were added totake care of dust, from which it is inferred that the Goldbank oreyielded too small an amount of dust to interfere with W. G. Adamson, president of the company, states that such wasthe ease, as the ore is a quartzite (?) breccia, recemented by silica, andextremely hard. (See p. 288, post.) Juniper wood was used for fuel. DRYING THE ORE. Though operators may differ as to the degree of drying necessarybefore charging the ore to the furnace, all are agreed that it is poor pol-icy to feed wet ore. IMoisture not only increases the amount of fumeto be condensed, and seems according to some to cause part at least of. Photo No. 56. Scott Furnace and Condensers at Klau Mine, San Luis Obispo County. Slop-ing top of condenser chambers was covered with sheet-iron and used as an ore drier. Theenclosing building was destroyed by fire a few years ago. the mercury to form a mist rather than larger collectable glol) it also forms sulphuric acid which attacks the condenser walls andfloors. Wet ore will sometimes hang up in the upper part of the fur-nace, and in barring d(/wn there is always danger of breaking in the ore results in a larger amount of condenser soot, andobviously will require more heat to bring the ore to the distillation tem-perature of the mercury. Hence, there are more heat units to be dis-sipated in the condenser system. This is referred to by Duscliak (see p,239, fiinte), under the head of fuel consumption. QUICKi-^ILVEK RESOURCES. 255 At the Great Eastern mine, near Guerneville, Sonoma County, theore is spread out on a sort of patio and dried in the sun,
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