Show NEW CYANIDE PLANT OPERATING trinity gold mining reduction company treating ore A special from carrville cardville Carr ville california to the redding free press gives the following description of the new cyanide plant built by the trinity company the ton cyanide reduction plant ot the trinity gold mining and reduction company near carrville cardville Carr ville has been in operation for ten days and the plant is giving the best of satisfaction the ore is delivered to the crushing plant in trains of two ton cars where it is brushed through breakers of the blake type it is then distributed to the battery ore bins by two belt conveyors with an automatic reversible tripper the battery ore bin has a capacity of 1300 tons of ore the ore is fed to the eight 5 6 stamp batteries each stamp weighing 1050 pounds by improved challenge feeders and isi is crushed in cyanide solution through 30 mesh screens the ore averages in gold and silver and 80 per cent extraction takes place in the battery A two pound cyanide solution is used the pulp passes direct from the batteries to four 60 foot double hydraulic cone classifiers the sands passing to four foot leaching vat to which they are fed in rotation and distributed by means of a butters distributor the slimes are thickened in two dorr thickeners and a pulp of one to one consistency is diluted to three to one with barren solution and then agitated in two pachuca agitators for three hours it is then discharged into two other door thickeners the thickened pulp of a consistency of two to one being fed to two oliver continuous filters whence the pulp is washed and discharged from the mill the overflow from the thickeners leaching tanks and oliver filters is run to clarifying tanks where the solution is clarified before precipitation the me merrill system of precipitation is used and the barren solutions rarely running over ac are built up to the requisite strength and pumped back to the storage tank for use again in the batteries the plant is modern in every respect and is the most up to date cyanide plant in the state the mill is all electrically driven the power being furnished from the companas comp anys power plant one and a halt half miles distant the power plant consists of a francis turbine direct connected to a ava generator the voltage is three phase 60 cycle which is transformed at the mill down to water is taken from coffee creek by a three by four foot flume feet in length which will deliver cubic feet of water per minute under a foot head at the power house 1 4 the company is employing sixty men and has laid in extensive supplies and prepared to run during th the e entire winter the property of the company is well equipped with a large boarding house kitchen dining room stables storehouse and other necessaries es the ore body has been stripped over its surface for an area of three acres with hydraulic giants and mining is done by the glory hole system except during stormy weather when inside ins de sloping will be resorted to air drills are used and ore is bein being delivered to the crusher for approximately 40 cents a ton when the mine is opened up better and during the summer months it is expected to reduce this mining cost to approximately 30 cents per ton the ore body varies in thickness from forty to ninety feet and tons of ore averaging in gold and silver is now exposed david goodale is manager of the trinity gold mining and reduction company and it was under his supervision that the great works were completed and put in successful operation |