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gmxmmm\\\““m\mmnwx\\xxxNm«; Everything for Building «P > mxfimm\\\\\\ o s n n n 1500 15 05100005 15 5 15105 5 15 5 5 5 o 5 t 4 Cenadian AA Branch Offices and Yards atâ€"Sudbury, Kirkland Lake, Timmins, Ont and Noranda, Que. LET US MACHINEâ€"SAND YOUR HARDWOOD FLOORS Timmins Office closed Saturday afternoons all year round. HILLâ€"CLARKâ€"FRANGIS LTD. ase send me free bookle NORKTH BAY COLLEGQE NEW BUILDINGSâ€"FIREPROOF MOST MODERN EQUIPMENT FOR HE. AND COMFORT Head Office and Factoriesâ€"New Liskeard, Ont. Residential College for Boys and Young Men â€" Campus: 20 acresâ€"Ideal for Athletics TERMS MODERATEâ€"W rite for Prospectus s Address: Rev. Cornelius P. Melien, C.R. Preparatory, ‘onducted by the Resurrectionist Father lo Prompt Attention Given to all Kinds of Repair Work. North Bay, Ontario ted amp References to Ore Dressing _ and Metallurgical Methods Methods in Ontario Modern and Prog Been Notable Factor in the Progress Province. â€" Question Dealt with at J Dept. of Minés Booklet. BUILDER‘S SUPPLIES L lern and Progressiv‘® and Have in the Progress of Mining in the Yealt with at Length in Ontario 35 ‘g E % E of less thnan 200 present there are of handling 2,000 The largest of the mine and has a 1@ day, though t yvet been handled Befors the dis in 1909, the pro mainly from min wWwoecds area in ] In the Lake of gold was usually state, â€" commonlj though cccasiona pyrite. Some of of the crudest ty elaborate. In th was to crush the either to treat i mation or cyani trate it on FPrue ° cyanidation or ct centrates. In t now Cbsolete, t dead roasted the ter and subjecté After this they water, from whi pated with cha phate. When c] either with or | | the usual practi separate the sli1 prior to cyanidat considered less than the sands carded. The sai ngs In the Hastings area, the wWas found in intimate association with arâ€" enopyrite at a number of properties. Various methods for the extraction Of the gold from the arsenopyrite were tried, in all of which amalzgamation in one way or another formed plart. Chlorination and cyanidation by ordinâ€" ary methods proved unsuccessful. Fiâ€" nally the bromoâ€"cyanide plrocess, deâ€" veloped in ‘Australia, was tried at the Deloro plant and proved successful in ccmbination with amalgamation and concentration. The ore was first crushed and amalgamated and the reâ€" sidue concentrated on Fru and tables. The concentri treated with bromoâ€"cyanide from which the gold was pI The residue was then treated the arsenic.. Since 1912, Ontario has the Porcupin When miills were put in 0 at Porcupine during 1912, the . evolved in the development of anidation process elsewhere we of which the principal one econocmic method of cyaniding Cvanidation was first used at aL * Ore Dressing and : Methods tamps for intermediate crushing. » The Zipond mill used rolls and a ball mill or this purpose. The two largest mills, he Hcllinger and Dome, which in that rear treated 45,195 tons and 75,088 tons, espectively, used allâ€"sliming cyanidaâ€" im on a large scale in conjunct:on e and has a ay, though 1 been handled from min area in 1 inding machinery. 12. thre were four mills in operâ€" n the Porcupine area, all of employed amalgamation. They ibeâ€"mills in open circuit for fine ig¢. and all except one employed in 200 ib AD ave made Untario Lle i2audc velorinent of the cyanidatio The most important improve ive been the result of the de t of mechanical equipmen n»ressure and vacuum crushin broken un! lustry has uring 1931 The concentrates were i bromoâ€"cyanide solution, the gold was precipitated, was then treated to recover 000 the discovery roductior he On the productl een mainly t‘ â€" Ki THE PORCUPINE ADVANCE, TTIMMINS, ONTARIO nic quan 4 produc 1906 residues TY fourtr ons ns or more a day. is at the Hollinger of 8,000 tons has not very of Psrcuping tion of gold came in the Lake of the thwestern ‘Ontario. Words area,., the etallursg Twentyv area, the gold was on Frue vanners concentrates were Onta quenC n prc« ha T1 Jelation WI ng in the] 1 Ontario tallturs i i1 hné 191 amalgamation As most of led contained tion with pyâ€" recovered by ork. however. On 12 O1iG derived ft kland â€" L cal fAv tre ha da operation ind iatmeE ipac a wWRAIC ntimate be siimes Porcuâ€" jyable l Om lLK CE ich Schumacher with amalgamation. These two plants, cperated by electrical power, accomâ€" plished the sams metallurgical result by two different mechanical means. The Deome mill stamped the ore in water then passed it over amailgam plates. The rejected material was claâ€" ssified into slimes and sands, and the latter were ground in tubeâ€"mills, then again passed over amalgam plates, The coarse materials that had escaped the tube mills and secondary plates were recovered by means of cone clasâ€" sifiers and returned to the tube mills to be reground. The Hollinger mill stampe2d the ore iin a cyanide soluation then ground it directly in tube mills, the produci of which was separated into slimes and sands. As the ore contained considerâ€" able gold in intimate association with pyrite, the sands were treated on conâ€" centrating tables, and then the conâ€" centrate was reground in grinding pans to which mercury was added to amalâ€" zsamate the released gold. The resiâ€" dues from the tables and amalgam crene lution tuted a stronsg cyanide mercury in the grinding mill became an allâ€"cyani method of treating th was soon abandoned in gerinding them in tube 0 give C hanical Tollinger nationally know n factory guaranteed electric refrigerator for only ipitate par rithout filts ere itrOon Wi in filter chanica i tanks Easy Term s FELDMAN BROS. We d, e ~Pulllon, Cr eISse emove impurities, > fluxed and smelted | ace to produce fine } ter its mills had b i short time, the Ho he siimes wet from which th PHONE 726 and 708 cantation of the c Ais permitted the Ited direc ato relted in an 0o ‘ fine bullion. had been op by runâ€" to were da and â€" amaig lime circuit imes were | pans, and T le plant. Th : concentrat favour of r to give lowâ€" ited with acid waterâ€"washed, in an oilâ€"fired ind rec Merill inide at the agitation TE this hi off T Kil m system was used with ballâ€"mill crushâ€" ing and tubeâ€"mill grinding. The latter was performed in closed circuit with classifiers in cyanide solution. This practice was adopted at other Kirklanag Lake cyanide mills which were erected An important addition to gold cyaniâ€" dation practice in Ontario was mads in 1918â€"19 with the general adoption of the Crowe vacuum process for the mechanical removal of dissolved oxyâ€" zen from cyanide solutions . previous to precipitation. This resulted in 4A marked reduction in the amount of zinc required for precipitation, and in secme instances resulted in a reduction cof the free cyanide loss that accompanâ€" ied zinc preciptation. Meanwhile, the use of stamps as seâ€" condary crushers was gradually disâ€" appearing in favourâ€"of rolls or ball mills, or both. This resulted generally in lower costs and ecqgaomy of space. About 1922, rod mills appeared as alâ€" ternative equipment. part of their counterâ€"current tion equipment . With this new system, it al general practice to use dou! tion by reagitating the pulp first filter in cyanide soluti sending it to the second filte same time further economy Las resulted from the use of t enéers instead of the older si mills been COn ncrea associat!1Cn Wivhi LOil] ter have proved dif the usual cyanidati0 loss in the tailings h as compared with The Wrigh:tâ€" Hargray troduced fiotation ce ary cyanide circuit a and classifiers for t] practices proved L were later abandone «land LAKe in CoOnjJunctlioll1 _ wWibtii lgamation, but the general pracâ€" there soon changed to allâ€"cyanidaâ€" at Porcupine. he first installation of the cyanide ‘ess in Kirkland Lake was at the shâ€"Oakes mill in 1914, where the sliming continous counterâ€"current em was used with ballâ€"mill crushâ€" and tubeâ€"mill grinding. The latter 1i th und in with a cla the inid and 2 am »H Kirkland LAKe 1 found in intimate TCO separately jandoned $ thouzsh Al Y firs! 2dua ating C ther T n b the McI 2A tub ssifi bal T1 and allâ€"slimin imalzgamation the older d exclusiv grinding 1 replaced |} I1 stem, it also became ) use double agitaâ€" the pulp from the also first used atlt conjunction with the general pracâ€" red to allâ€"cyanidaâ€" ]II lfi CIVSCG CIE* ind an amalgam ier overflow was current decantaâ€" 12 OT by 1pine 11 t qul pI n befo on with daditicn, 1 192 t 1€ t t ty pe tub hav , the pace â€" 1€ BT i1 dation Are immedIA The fictation concentr only about 15 per cenrt ore by weight, are the and cyvanided. ‘This process has been maae possible by the recent discovery of fictation agents that have a greater selectivity for minerals particles than any preâ€" viously known. The advantages of this process, for ores that can be economiâ€" cally treated by flotation, include not only the reduction in milling costs due to the eliminatison of 85 per cent. or so of the mill feed from fine grinding and cyanidation, but also a reduction in plant construction and equipment costs. It is thus possible that the floâ€" tation process will play the major part in the future recovery of gold from Ontario ores. n Oitawa Journal:â€"Bet tho delegates would be glad to preference on some of our re ther. Bramption Conservator::â€"Two hunâ€" dred Russian emigrants sailed from Halifax on Monday. Many of them are children of Russian parents, born in Canada. They are going to Russia, where they allege work has been proâ€" mised them. Frequently the statement is made that conditions are better in that country than in Canada, but those responsible have heretofore refrained from showing their faith in such alâ€" legations by returning to that land. The reports of the two hundred who are now making the journey home will, if results are satisfactory, cause others to follow their example, which will be gcod news for the people of Canada. Of one thing the emigrants may rest assured, they will not long be allowed to carry on agitation against the government of Russia as they have aone against the government of Canâ€" ada. ede plus free and attached ; _ a concentrate. The tailings e filotation cells containing valâ€" w the economic limits of cyaniâ€" are immediately discarded. tation concentrates, comprising mt 15 cert. of the original it it a new 2,000â€"ton mill to emâ€" on as a primary treatment cyanidation. The mill was ind put in oreratiocn during * reducing the ore to about finely hose British o give us a recent weaâ€" o flota ally al iled of them >nts, born to Russia, was to emâ€" eatment A 1 vanide 11 KELLOGG‘S Corn Flakes have a delicious "wonder" fiavor disâ€" covered by W. K. Kellogg and never successfully imitated by any one else. FKFreshness The minute Kellogg‘s leave the toasting ovens, the flakes are completely sealed in a WAXâ€" TITE bag which is placed inâ€" side the redâ€"andâ€"green packâ€" age and keeps every flake fresh and perfect. It‘s a patented Kellogg feature! Kellogg‘s Corn Flakes are among the most economical and convenient of foods. Guarâ€" anteed by W. K. Kellogg: "If you do not think them the very best corn flakes you ever tasted, return the empty redâ€"andâ€" green package and we will reâ€" fund your money." Made by Kellogg in London, Ontario, Thursday, Sept. 1st, Hlayor V alue