Show MEXICAN MILL ON COMSTOCK ADOPTS NEW CRUSHING SCHEME 4 in a new scheme developed at the mexican mill in this city according to a statement made by superintendent alex wise of the northend mines the ore is crushed in the battery in water instead of cyanide solution with the ore sent to the classifiers and the coarse material is delivered direct to the tube mills in closed circuit the moisture in this ore is about one of water to three of ore and is brought up to a strength of two pounds of cyanide the overflow discharge from the classifiers is run at present to a callow cone and the overflow run to waste the underflow is pumped direct to no 1 agitator and unites with the ground material from the tube mills and the balance of the operation is as heretofore n amely counter current decantation the object of this new process is to wash out the decayed wood and nd soluble sulphates and throw to waste about 5 to 10 per cent colloidal slimes these slimes carry only a small assay value it is expected that this method will increase the tonnage from 80 to at least tons per day and later a possible tons every twenty four hours and will balance the cost against small loss contained in the values ip the colloid als the mill can be changed back within five minutes to the old system of grinding in cyanide solution in the batteries and this will be done on all high grade ores A bullion shipment was made from the mexican mill this week to the san francisco mint having a gross value of there will be another cleanup clean up and bullion shipment within the next few days virginia chronicle Chron cle 1 c 0 1 |