Volume 112
Milling Methods Sponsored by the Rocky Mountain Fund Papers Specially Solicited for this Volume by the Institute’s Technical Committee on Milling Methods
Title Page
Committee on Rocky Mountain Income
Committee On Milling Methods
A.I.M.E. Officers and Directors
Preface. By Charles E. Loke
Contents
Robert Hallowell Richards

PAPERS:

Crushing and Grinding

TITLE AUTHOR
The Hadsel Mill R. G. Hall
Ball Milling (With Discussion) A. M. Gow, M. Guggenheim, A. B. Campbell and W. H. Coghill
Advantage of Ball (Rod) Mills of Larger Diameters and Advantage of Improving Bearings (With Discussion) Will H. Coghill, Fred D. DeVaney and R. G. O’Meara
Some Fine-grinding Fundamentals A.W. Farenwald
Summary of Investigation on Work in Crushing John Gross
Grindability of Various Ores Walter L. Maxon, F. Cadena and Fred C. Bond
Crushing and Grinding Characteristics as Determined from Screen Analyses Fred C. Bond and Walter L. Maxson

Classification and Settling

TITLE AUTHOR
Fine Grinding and Classification J. V. N. Dorr and Anthony Anable
Colloidal Chemistry of Pulp Thickening Elliott J. Roberts

Flotation Therory and Practices

TITLE AUTHOR
Principles of Flotation, I-An Experimental Study of the Effect of Xanthates on Contact Angles at Mineral Surfaces (With Discussion) L. W. Wark and A. B. Cox
Principles of Flotation, II-An Experimental Study of the Influence of Cyanide, Alkalis and Copper Sulfate on the Effect of Potassium Ethyl Xanthate at Mineral Surfaces L. W. Wark and A. B. Cox
Principles of Flotation, III -An Experimental Study of the Influence of Cyanide, Alkalis and Copper Sulfate on the Effect of Sulfur-bearing Collectors at Mineral Surfaces L. W. Wark and A. B. Cox
Hypothesis for the Nonflotation of Sulfide Minerals of Near-colloidal Size A. M. Gaudin and Plato Malozemoff
Reactions of Xanthates with Sulfide Minerals A. M. Gaudin, Franklin Dewey, Walter E. Duncan, R. A. Johnson and Oscar F. Tangel, Jr.
The Case for the Chemical Theory of Flotation A. F. Taggart, G. R M. Del Giudice and Othon A. Ziehl
Action of Alkali Xanthates on Galena T. Clinton Taylor and A. F. Knoll
Study of Slime-coatings in Flotation (With Discussion) G. R. M. Del Giudice
Production of High-grade Concentrate from Butte Copper Ores - Results of Laboratory Investigations B. S. Morrow and G. G. Griswold, Jr.
Microscopy in Flotation Research G. R. M. Del Giudice

Flotation of Nonsulfides

TITLE AUTHOR
Soap Flotation of the Nonsulfides (With Discussion) Will H. Coghill and J. Bruce Clemer
Milling Methods and Costs at No. 2 Concentrator of the Phosphate Recovery Corporation, with an Appendix on New Developments in the Flotation Concentration of Phosphate Rock H. S. Martin
Relative Floatability of Silicate Minerals. (With Discussion) John Mark Patek

Magnetic Concentration

TITLE AUTHOR
Magnetic Concentration of Ores R. S. Dean and C. W. Davis

Gold and Silver Milling and Cyaniding

TITLE AUTHOR
Economical Techniques in Treatment of Gold Ore A. W. Allen
Ore Treatment as a Factor in Small Gold-mining Enterprises Ernest Gayford
Increasing Gold Recovery from Noranda's Milling Ore G.C. McLachlan
Review of Black Hills Metallurgy, with Particular Reference to the Homestake Ores Allan J. Clark
Milling Methods of the Porcupine District of Northern Ontario P. D. P. Hamilton
Cyanidation at Kirkland Lake Donald F. Irwin
Dissolution of Gold and Silver in Cyanide Solutions George Barsky, S. J. Sawinson and Norman Hedley
Milling Gold Ores at Pioneer Russell Spry and Paul Schutz
Ore Treatment at Beattie Gold Mines Limited W.G. Hubler and F.J. Martin
Milling Methods and Costs at Presidio Mine of the American Metal Co. of Texas Van Dyne Howbert and Fred E. Gray
Milling and Cyanidation at Pachuca R. R. Byran and M. H. Kuryla
Cyanide Milling Practice of The Fresnillo Company W. E. Crawford
Milling Methods at the Concentrator of The Fresnillo Company W. A. Binsacca
Development of Milling and Cyanidation on the Witwatersrand F. Wartenweiler

Milling Practice Nonmetallic Minerals

TITLE AUTHOR
Mechanical Preparation of Nonmetallic Minerals Paul M. Tyler

Milling Practice – Iron, Tungsten and Base Metals

TITLE AUTHOR
Iron-ore Beneficiation in the Lake Superior District E. W. Davis
Concentration of Tungsten Ore by the Nevada-Massachusetts Co. Ott F. Heizer
Milling Practice at Buchans Mine, Buchans, Newfoundland G. A. Hellstrand and P. W. George
Milling Practice in the Tri-State Zinc-lead Mining District of Oklahoma-Kansas and Missouri S. J. Burris, Jr. C. O. Anderson, Robert E. Illidge, Warren Howes and M. D. Harbaugh
Nkana Mine Concentrator L. P. Durham
Concentration Operations at the Roan Antelope Copper Mines Limited J. W. Littleford
Concentration of Polish Bleischarley Ores L. P. Davidson and M. C. Messner

INDEX

TITLE AUTHOR
Index