Volume 69
Containing the Papers and Discussions Presented at the Meetings Held in New York and Canada in 1923
Title Page
Preface
Contents
Officers and Directors
Honorary Members
Institute Committees

PROCEEDINGS OF MEETINGS

MEETING DATE
New York Meeting February, 1923
Canadian Meeting August, 1923

PAPERS:

SAN FRANCISCO MEETING September, 1922

TITLE AUTHOR
Present Tendencies in Exploration for New Mines (with Discussion) Augustus Locke

NEW YORK MEETING February, 1923

TITLE AUTHOR
Economic Application of Zonal Theory of Primary Deposition of Ores (with Discussion) John Carter Anderson
Magnetic Methods for Exploration and Geologic Work W. O. Hotchkiss
Pyritic Smelting and Basic Converting at the Kosaka Copper Smelter, Japan (with Discussion) Kenzo Ikeda
Heap Leaching at Bisbee, Arizona (with Discussion) A. W. Hudson and G. D. Van Ardsdale
Relative Efficiency of Amalgamation and Cyaniding Allan J. Clark and W. J. Sharwood
Soluble Silica in the Preparation of Zinc-sulfate Solution for Electrolysis (with Discussion) Jesse O. Betterton
The Rove Tunnel M. Mathieu
Liquid-oxygen Explosives at Pachuca (with Discussion) Michael H. Kuryla and Galen H. Clevenger
Installation of Fire-fighting Equipment in Mines (with Discussion) Benjamin F. Tillson
Some Problems in Ground Movement and Subsidence (with Discussion) George S. Rice
Subsidence at Miami, Arizona (with Discussion) J. Parke Channing
Mining an Upper Bituminous Seam after a Lower Seam has been Extracted (with Discussion) Howard N. Eavenson
Examples of Subsidence in Two Oklahoma Coal Mines (with Discussion) J. J. Rutledge
Mine-drainage Stream Pollution (with Discussion) Andrew B. Crichton
Interpretation of Results of Coal-washing Tests (with Discussion) Thomas Fraser and H. F. Yancey
Design and Operation of Roberts Coke Oven (with Discussion) M. W. Ditto
Heat Distribution in New Type Koppers Coke Oven Jos. Van Ackeren
Combustion of Blast-furnace Cokes in Fuel Beds (with Discussion) Ralph A. Sherman and John Blizard
Combustion of Coke in Blast-furnace Hearth (with Discussion) G. St. J. Perrot and S. P. Kinney
Forms of Sulfur in Coke, and Their Relations to Blast-furnace Reactions (with Discussion) S. P. Kinney
Use of Magnetic Ore in the Blast Furnace G. P. Pilling
Review of Present Status of Drill Steel Breakage and Heat Treatment (with Discussion) Francis B. Foley, Charles Y. Clayton and Henry S. Burnholz
Hardness and Heat Treatment of Mining Drill Steel Shanks (with Discussion) Charles Y. Clayton
Heating and Cooling Curves of Large Ingots (with Discussion) F. E. Bash
Continued Discussion on the Physics of Steel (with Discussion) William R. Webster
Influence of Temperature, Time and Rate of Cooling on Physical Properties of Carbon Steel Henry M. Howe, Francis B. Foley and Joseph Winlock
Application of Colloid Chemistry to Production of Clean Steel (with Discussion) H. W. Gillett
Low-temperature Brittleness in Silicon Steels (with Discussion) Norman B. Pilling
Deterioration of Malleable in the Hot-dip Galvanizing Process (with Discussion) W. R. Bean
Observations on the Occurrence of Iron and Silicon in Aluminum (with Discussion) E. H. Dix, Jr.
A Study of Bearing Metals (with Discussion) Christopher H. Bierbaum
Occurrence, Chemistry, and Uses of Selenium and Tellurium (with Discussion) Victor Lenher
Bright Annealing of Copper Wire in an Atmosphere of Natural Gas (with Discussion) P. E. Demmler
Thermal Conductivity of Some Industrial Alloys H. M. Williams and V. W. Bihlman
Action of Mud-laden Fluids in Wells (with Discussion) Arthur Knapp
The Sunburst Oil and Gas Field, Montana (with Discussion) Dorsey Hager
Relation of Bonuses and Costs to Present-day Prices of Crude and its Products (with Discussion) Thomas Cox
Oil Development on the Isthmus of Tehuantepec Stirling Huntley
Cannel Coal and Carbonaceous Shale Deposits of Pennsylvania (with Discussion) Charles R. Fettke
Note on a Scheme for the Study of the Physics of Cast Iron Richard Moldenke

CANADIAN MEETING August, 1923

TITLE AUTHOR
Porcupine Ore Deposits (with Discussion) Louis D. Huntoon
Magnesite Deposits of Grenville, Quebec G. W. Bain
Cherts and Igneous Rocks of the Santa Elena Oil Field, Ecuador Joseph H. Sinclair and Charles P. Berkey
Secondary Enrichment at Eagle Mine, Bonanza, Colo. C. Erb Wuensch
Helium, a National Asset (with Discussion) Richard B. Moore
Proposed Plan for Crushing, Grinding, and Concentrating Low-grade Sulfide Ore (with Discussion) Arthur Crowfoot
A Contribution to the Kick versus Rittinger Dispute (with Discussion) H. E. T. Haultain
Ball Paths in Tube-mills and Rock Crushing in Rolls (with Discussion) H. E. T. Haultain and F. C. Dyer
Mining Methods at Bawdin Mine A. B. Calhoun
Loading Ore Underground with Scrapers at the Utah-Apex Mine S. P. Holt
Emergency Power for Mines (with Discussion) Graham Bright
Desulfurizing Power of Iron Blast-furnace Slags (with Discussion) Richard S. McCaffery and Joseph F. Oesterele
Effect of Silicon on Equilibrium Diagram of System Carbon-iron near Eutectoid Points (with Discussion) H. A. Schwartz, H. R. Payne, A. F. Gorton
Nitrogen in Steel (with Discussion) C. Baldwin Sawyer
Some Commercial Alloys of Iron, Chromium, and Carbon in the Higher Chromium Ranges C. E. MacQuigg
Some Effects of Zirconium in Steel (with Discussion) Alexander L. Field
Selecting Material for Formed and Drawn Parts (with Discussion) L. N. Brown
X-Ray Examination of Irregular Metal Objects (with Discussion) Ancel St. John

CLEVELAND MEETING May, 1923

TITLE AUTHOR
Effect of Heat Treatment on Release of Stress in Bronze Castings (with Discussion) Robert J. Anderson and Charles H. Eldridge
Solid Solutions Walter Rosenhain
Density of Magnesium from 20° to 700° C. (with Discussion) Junius D. Edwards and Cyril S. Taylor

CHICAGO MEETING September, 1919

TITLE AUTHOR
Federal Taxation of Mines (with Discussion) L. C. Graton

BIOGRAPHICAL NOTICES

TITLE
Robert Woolston Hunt
William R. Walker
Harry Harkness Stoek
Charles Mather MacNeill
Robert Carl Sticht
George Edward Webber
Arthur Yates
Ellsworth Daggett

INDEX

TITLE AUTHOR
Index