Volume 205
Mining, Minerals Beneficiation, Coal, Industrial Minerals, Geology, Geophysics
This Volume is made up of Papers and Discussions Presented at meetings held at New York, February 12-16, 1950; Lake Placid, N. Y., October 5-9, 1954; Chicago, February 14-17, 1955; Spokane, Wash., April 28-30, 1955; Columbus, Ohio, October 19-21, 1055; New York, February 20-23, 1956; Seattle, Wash., May 3-5, 1956
Title Page
Foreword By Will Mitchell Jr.
Contents

Mining

TITLE AUTHOR
Safety Factor Characteristic Curves for Mine Hoisting Ropes W. A. Boyer
Acid Coal Mine Drainage. Truth and Fallacy About a Serious Problem S. A. Braley
Discussion Douglas Ashmead
A Laboratory Method of Determining the Thermodynamic Efficiency of High Explosives Leonard L. Felts, George B. Clark, and Joseph J. Yancik
The Fluidized Bed Reactor Installation at Sparrows Point H. B. Scharf and E. C. Dominguez
More Rock Per Dollar from the MacIntyre Pit F. R. Jones
Human Response to Industrial Blasting Vibrations Jules E. Jenkins
Mining Methods at the Iron King Mine H. F. Mills and L. Bombardieri
Corrosion Problems in Pumping Acid Mine Water C. D. Clarke and G. Reinberg
Underground Haulage in Metal Mines S. H. Ash

Minerals Beneficiation

TITLE AUTHOR
Energy Transfer By Impact R. J. Charles and P. L. De Bruyn
Discussion J. P. Zannaras
Adsorption of Ethyl Xanthate on Pyrite A. M. Gaudin, P. L. De Bruyn, and O. Mellgren
Correction A. M. Gaudin, P. L. De Bruyn, and O. Mellgren
Depolarizing Magnetite Pulps M. F. Williams and L. G. Hendrickson
Ionic Size in Flotation Collection of Alkali Halides D. W. Fuerstenau and M. C. Fuerstenau
Improved Contact Angle Apparatus for Flotation Research D. W. McGlashan and K. N. Mcleod
Particle Size and Flotation Rate of Quartz P. L. De Bruyn and H. J. Modi
Discussion W. E. Horst and T. M. Morris
Differential Infrared Spectra of Adsorbed Monolayers-n-Hexanethiol on Zn Minerals Edward M. Eyring and Milton E. Wadsworth
Precipitation of Metal from Salt Solution by Reduction with Hydrogen F. A. Schaufelberger
Ultrasonic Desliming and Upgrading of Ores S. C. Sun and D. R. Mitchell
Cananea's Program for Leaching in Place R. C. Weed
Tailing Disposal at the Morenci Concentrator P. F. Allen
Reagent Control in Flotation C. H. Bushell and M. Malnarich
A Kinetic Study of the Leaching of Molybdenite W. H. Dresher, M. E. Wadsworth, and W. M. Fassell, Jr.
A Method of Preparing Closely Sized Micron and Submicron Fractions R. W. Smith and R. J. Charles
Flocculation of Mineral Suspensions with Coprecipitated Polyelectrolytes M. E. Wadsworth and I. B. Cutler
Modernization of Bunker Hill Presintering Practices H. E. Lee and D. Ingvoldstad
Preconcentration of Primary Uranium Ores by Flotation B. C. Mariacher
Flotation of Secondary Uranium Minerals J. N. Butler and R. J. Morris
High Velocity Impact in Comminution R. J. Charles
Nodulizing Practice at Manganese Inc W. L. Kendrick
Predicting Size Distribution in Classifier Products E. J. Roberts and E. B. Fitch
Improved system measures Heavy Slurry Density Bernard Rachlin

Coal

TITLE AUTHOR
Low-Temperature Carbonization of Lignite and Noncoking Coals in the Entrained State V. F. Parry, W. S. Landers, and E.O Wagner
Discussion R. G. Minet, N. E. Sylvander and G. A. Vissac
Petrologic Methods for Application to Solid Fuels of the Future J. M. Schopt
Underclay Squeezes in Coal Mines W. A. White
Coal Preparation at the Jones & Laughlin Vesta Mines J. A. Glunt and J. R. Dawson

Industrial Minerals

TITLE AUTHOR
Deformations in the Shells of Rotary Cement Kilns S. M. Brisbane
Application of the Phi Scale to the Description of Industrial Granular Materials C. H. Bowen
Processing and Marketing Muscovite Block and Film Mica Robert D. Thomson
Raw Materials Preparation at the Brandon Plant, Mississippi J. C. Holm
Acid and High Analysis Fertilizer Production from Western Phosphate Rock R. J. McNally
The Domestic Graphite Supply Problem E. N. Cameron

Geology

TITLE AUTHOR
Uranium Deposits in the Black Hill J. W. King
Genesis of Titaniferous Magnetites and Associated Rocks of the Lake Sanford District, New York J. L. Gillson
Methods Used to Determine Grade and Reserves of Pegmatites J. J. Norton and L. R. Page
Mineralizing Solutions That Carry and Deposit Iron and Sulfur B. S. Butler
Discussion B. S. Butler
Oxidation and Enrichment of the Manganese Deposits of Butte, Mont P. L. Allsman
Geology in Development and Mining, Southeast Missouri Lead Belt F. G. Snyder and J. A. Emery

Geophysics

TITLE AUTHOR
Geophysical Investigations in the Central Portion of Michigan's Upper Peninsula G. E. Frantti
The Circular Line Electrode in Equipotential Prospecting (with discussion by Robert G. Van Nostrand) L. O. Bacon
The Gravity Meter in Underground Prospecting; W. Allen, Jr.
Heavy Metals in Stream Sediment as an Exploration Guide H. E. Hawkes and H. Bloom
Airborne Magnetometer Profile from Olympia, Wash., to Laramie, Wyo. W. B. Agocs and R. R. Hartman

Technical Note

TITLE AUTHOR
Measuring Zeta Potentials by Streaming Potential Techniques D. W. Fuerstenau

Discussion of Papers Published Prior to 1956

TITLE AUTHOR
Structural and Stratigraphic Control of Ore Deposition in the West Shasta Copper-Zinc District, California A. R. Kinkel Jr.
Comminution as a Chemical Reaction K. F. G. Hosking
Discussion of Papers Published Prior to 1956  
Coal Preparation with the Modern Feldspar Jig L. L. Mohier
Analysis of Roof Bolting Systems Based on Model Studies J. P. Zannaras

Extractive Metallurgy

As many members of the Mining Branch are interested in the papers of the Extractive Metallurgy Division, the titles of the papers published for that Division in 1956 are listed below. These papers, and discussion, appear in Transactions (1956) 206, Metals Branch
TITLE AUTHOR
Surface Tensions of Silicates R. E. Boni and G. Derge
Kinetic Study of the Oxidation of Sphalerite John N. Ong, Jr., Milton E. Wadsworth, and W. Martin Fassell, Jr.
Preparation of Metallic Titanium by Film Boiling A. W. Petersen and L. A. Bromley
Debismuthizing of Lead T. R. A. Davey
Separation of Germanium and Cadmium From Zinc Concentrates by Fuming H. Kenworthy, A. G. Starliper, and A. Ollar
Purification of GeGl4 by Extraction With HCI and Chlorine H. C. Theuerer
Direct Measurement of Ferrous Ion Mobility in Liquid Iron Silicate by a Radioactive Tracer Technique M. T. Simnad, Ling Yang, and G. Derge
Sulfur Pressure Measurements Above FeS In Equilibrium With Iron C. L. McCabe, C. B. Alcock, and R. G. Hudson
Precipitation of Metal from Salt Solution By Reduction with Hydrogen F. A. Schaufelberger
A Kinetic Study of the Leaching of Molybdenite William H. Dresher, Milton E. Wadsworth, and W. Martin Fassell, Jr.
Recent Developments in Electrolytic Copper Refining Stuart S. Forbes
Flocculation of Mineral Suspensions With Coprecipitated Polyelectrolytes Milton E. Wadsworth and Ivan B. Cutler
Kinetics of the Oxidation of Galena In Ammonium Acetate Solutions Under Oxygen Pressure D. P. Seraphim and C. S. Samis
Equilibrium Considerations in the Roasting of Metallic Sulfides Herbert H. Kellogg
Magnetite in the Hurley Copper Smelter H. W. Mossman
Basal Plane Development in Electrodeposited Hexagonal-Close-Packed Metals: Zinc, Titanium, and Zirconium W. R. Opie
Modernization of Bunker Hill Presintering Practices Harold E. Lee and Donald Ingvoldstad
Great Falls Billet Plant Roy H. Miller and L. J. Ingvalson
Gas Content of Solid Aluminum by Solid Extraction and Vacuum Fusion James L. Brandt and C. Norman Cochran

INDEX

TITLE AUTHOR
Index