Show Their heir Method of Treatment Described F THE FilE DEVICES EMPLOYED E POWER POW AND HIGH I EX THE FEATURES I I IVi WIh WIb Vi h the magnificent new mill mm of the thep p Linie j nie Laurie Lawle company in n Gold Moun M n nin ain in district working winking to perfection n J tf Callow Dow the te supervising engineer un ler whose e direction arid and a d plans the plant I was wa constructed cona Iras bas ms returned to his hI in the t he Boston Consolidated I I where he serves jerve Samuel New louse rouse in his hie h official calling and to him himOr himor k Or or r the following description of ubly the finest and certain y the most cyanide null mill in this western Stern W The Herald is la under obliga obligations jons The description is given in the ab terms And 1100 the process can therefore be toe readily understood by all allt The ore arom the No 4 level of the t nine is te brought down over the th surface I tramway a distance of some 1600 feet teet and automatically au dumped i into a receiving bin From there I Itt It tt t is fed over the grizzlies to a No 5 S crusher The coarse ore which I passed N through the crusher is carried thence to an elevator that carries it to a 8 I screen the from which go to two N Nt No 1 Gates Oates crushers and so on until it is all reduced to pass ss p v a 1 noo round hole This product raiLs falls direct into int another bin in of and from there it is fed ed by two wo Gates feeders into an equal number ur Dr r Argall Arall driers From the th driers it ft is carried to the top of the mill by a link belt to A height of seventy feet and dis die discharged charged d at a temperature of de degrees derees trees grees rees into e tenton steel steal el bin From there it goes through the fine JUl department which consists of tour SEts of inch Gates Oates ates rolls each ah in connection with over overhead overhead overhead head screens screen Here the reduction takes ce gradually the first set of rolls roUs taking up the th mesh over oVet Bige ize the second set the h oversize the third six and nd the fourth oversize This feature of oi the plants equipment is in many original and unique Mid and represents represent the applied advanced ideas of Mr Callow The Tiie ore is then delivered into the pulp pp bin and moistened to allay aUay the dustbin dust This bin has bas a capacity of no less Jes than 00 tons tone f Each department f the mill milt is driven by an independent e electric motor and the actual horsepower nee essary eary to operate the entire rep represents represents resents rents only five to of a horsepower for tor each ch ton of ore crush crushed crushed ed to The best beet be t previous s known record on similar work is tenths of a 8 horse power The mill mm was designed for tons daily dally capacity but at various VIlous times tIm since it was as placed in commission the tile record has bas exceeded tons This however how ver is in excess e of the present p nt leaching capacity and now that ut alj 11 the tanks are in use the depart departments departments departments ments wiH will necessarily nece have bave to drop to the nominal toils The ore is hard ham and gritty hut but in ad addition addition addition carries considerable talc which makes me dust in the roll room rosin but Isit this difficulty or annoyance will short shortly ly be overcome by Iby the th installation in of machinery that Engi Engineer Engineer Engineer neer Callow promises will leave eava the at atmosphere atmosphere phere mo clear cleM and wholesome The leaChing department te JIB equipped with ten tan tanks each thirty feet leet in dl di five feet deep and having a 8 ca capacity capacity of tons to the tank These tanks are fed from the great pulp bin by means of cars and the tailings are areTt I Tt removed loved ed by sluicing at the rate of forty tons tone an hour with a hinch nozzle un under under der del eighty pounds pound pressure Before going to the creek the tailings pas oer iv er specially designed shaking amalgamating amu tahl in order that any I coarse particles of gold goW which the cyan cyanide cyanide ide solutions ma not have dissolved can be saved The rhe cyanide solutions are applied to the pulp and drawn off oft offin in the usual manner and are then pre pee precipitated precipitated I on zinc shavings under the patent the tile precipitation precipitation tation in traveling the length lenth of five compartment only being almost per perfect perfect fed The slime shines are collected in the usual way and d the tile resulting product is 18 marketed the company not yet having bavIng provided for tor red reducing cing It to bullion The T e treatment was calculated in the beginning to occupy ten days but op operations operations to date have demonstrated that seven days davs will Swill be amply sufficient to cover the period from the filling to of tanks The extraction of gold cuts close clo e to 90 per rent cent nt and silver nearly ne 70 making a combined savin saving of from iem 85 to 88 per jer cent of the Che metallic con Jl contents tents of the ine ore results that Mr Cal Callow Callow Callow low declares compare very favorably with v ith the best mills of the Cripple Creek district In the beginning the management m of the company was inclined to bund a stamp mill miU hut ut William Orr of the company and Mr Callow together finally suc sue succeeded in having the method described substituted as being much simpler and beter bet er and the wisdom of ot their advice is ow apparent |