Show Mining Officials to Discuss Operating Problems at Meeting Operating problems of metal mines are arc stated slated for discussion b by bythe th the western divisIon of the Amer- Amer can Mining congress at its Is ton at Los Ios Angeles September 10 to 13 Officials ot of a number Jumber ot of the leading In tile the west Cst wilt wI lead the way by presentation or of addresses addresses ad- ad dresses on various phases ot of mine o operating problems which their companies have had to meet DIrector DI DI- rector George Otis Smith ot of the geological survey suney president of the American Institute or of Mining and Metallurgical Engineers whose southern souther California will wl hold hoM hoMa holda a joint meeting with wih that that of the mining organization wili wIl discuss Our Share In the Nations Nation's Busi- Busi ness The he sessions of the convention devoted to operating problems will willbe be addressed by the following A. A A J. J MacLean MacLen general Ing agent Utah Copper company The Supply Department J. J S. S Inley Finley superintendent North LIS Mining company Sinking the North Lily Liy ShaW Shaft James W. W Wade assistant general manager Standard Mining company Coop Cooperative MIning Development nt J. J B. B Pullen ventilation engineer Copper Queen branch Ph Phelps Dodge corporation corpor- corpor Underground Mine Ventilation Venta- Venta tion ton Problems at the Copper Queen H. H H. H Pratt Prat mechanical corporation Diegel Engines as a Source of Power T. T O. O McGrath general i manager manage Shattuck Denn Mining I corporation The Mine Managers Manager's I Cost Control Problem A. A ClOI Crowfoot Crow Crow- ClO I foot mill superintendent nt Morenci I branch Phelps DOdge corporation and a member ot of tile the staff ol of tile the Copper company stat The Conditioning of at Pulp In Flotation Flo- Flo tation O. O McCraney l- l dent Argonaut ining company Mining Problems at the Argonaut Mine W. W S. S dent Nevada Consolidated Copper company Problems Met In the Change rom From Open Pit to Underground Underground Under Under- Under Under- ground Mining Charles 1 F Steinbach Stein Stein- bach Nevada Nevada- Consolidated Copper in company The Use or of Scrapers Underground Loading at the Ruth Mine A. A S. S manager Anna Beaver Mines companY compan Anna the District Hoisting in A staff member ot of the ChIno Mines Unes ot of the Nevada Consolidated Copper company wi also address the meeting on 00 mine operating problems at be presented The program to 0 sessIons or of tile the mineral committee California aSSO- aSSO ot of the Caloria citation at the tinie or of the or of caton the western divIsion ot of the congress will In- In American Mining the Rush T. T Sill Si vIce ot of tIle the committee on mineral development California William E. E In southern souther Colby chairman ot of the Committee on federal legIslation leg leg- affecting mineral development development develop develop- ment Dean Frank II I. I Probert chairman or of tile the mIneral publicity national publicity In Inthe inthe committee on oct the raining mining In In which lIe he hewl wIll emphasIze the tho importance of o othe wl the mineral industry to agriculture Stal- Stal and Industry and Walter Vater der cler vice chairman of the mIneral research committee on OIL coordination tion ton or of agencies in mineral research 5 |