Volume 63
Containing the Papers and Discussions on Geology, Mining, Milling and Coal, Presented at the Chicago Meeting, September, 1919, and at the New York Meeting, February, 1920

Title Page

Preface

Contents

Officers

Honorary Members

PROCEEDINGS OF MEETINGS

MEETING	DATE
New York Meeting	February, 1920
Women’s Auxiliary	February, 1920
Inaugural Address of Herbert Hoover	February, 1920
Reports for the Year
President	February, 1920
Secretary	February, 1920
Treasurer and Finance Committee	February, 1920
Committee on Papers and Publications	February, 1920
Committee on Membership	February, 1920
Library Committee	February, 1920

PAPERS:

CHICAGO MEETING September, 1919

TITLE	AUTHOR
Recent Studies of Domestic Manganese Deposits	E. C. Harder and D. F. Hewitt
Manganese-ore Deposits in Cuba	Ernest F. Burchard
Recent Studies of Domestic Chromite Deposits	J. S. Diller
Chrome-ore Deposits in Cuba (with Discussion)	Ernest F. Burchard
Magnesite: Its Geology, Products and Their Uses (with Discussion)	C. D. Dolman
Correlation of Formations of Huronian Group in Michigan (with Discussion)	R. C. Allen
Wisconsin Zinc District (with Discussion)	W. F. Boericke and T. H. Garnett
Mineral Resources of the La Salle District	J. A. Ede
Titaniferous Iron Sands of New Zealand (with Discussion)	V. W. Aubel
Ore Deposits of the Mogollon District (with Discussion)	David B. Scott
Mud Volcanoes of Colombia, South American	Stanley C. Herold
Geology and Mining Methods at Pilares Mine	W. Rogers Wade and Alfred Wandtke
Tunnel Driving at Copper Mountain, B. C.	Oscar Lachmund
Wedging Diamond-drill Holes (with Discussion)	O. Hall and V. P. Row
New Angles to the Apex Law	John A. Shelton
Mining Methods of Alaska Gastineau Mining Co.	G. T. Jackson
Crushing Practice, New Cornelia Copper Co.	W. L. DeMoulin
Chilean-mill Practice at the Portland Mill (with Discussion)	Luther W. Lennox
Mill Operations at United Eastern during 1917 and 1918 (with Discussion)	Wheeler O. North
Graphic Metallurgical Control	H. M. Merry
Method of Curtailing Forces at the Copper Queen (with Discussion)	C. F. Willis
Physical Examination Previous to Employment	C. F. Willis
Educational Methods at the Copper Queens (with Discussion)	C. F. Willis
Outdoor Substations in Connection with Coal-mining Installations (with Discussion)	H. W. Young
Sulfur in the Coking Process (with Discussion)	S. W. Parr
Commercial Recovery of Pyrite from Coal (with Discussion)	S. H. Davis
Low-sulfur Coal in Illinois (with Discussion)	Gilbert H. Cady
Low-sulfur Coal in Pennsylvania (with Discussion)	H. M. and T. M. Chance
Removal of Sulfur from Illuminating Gas (with Discussion)	W. W. Odell and W. A. Dunkley
Forms in which Sulfur Occurs in Coal (with Discussion)	A. R. Powell and S. W. Parr
Mechanical Separation of Sulfur Minerals from Coal (with Discussion)	J. R. Campbell
Coals of Ohio and Their Limitations for Byproducts Coke	J. R. Campbell
Sulfur in Producer Gas	Frederick Crabtree and A. R. Powell
Low-sulfur Coals of Kentucky	Willard R. Jillson
Effect of Sulfur in Coal Used in Ceramic Industries	C. W. Parmalee
Sulfur in Coal, Geological Aspects	Geo. H. Ashley
Distribution of Anthracite	A. S. Learoyd
Research in the Coal-mining Industry (with Discussion)	E. A. Holbrook
Some Factors that Affect the Washability of a Coal (with Discussion)	Thomas Fraser
A Use Classification of Coal (with Discussion)	George H. Ashley
Height of Gas Cap in Safety Lamp (with Discussion)	C. M. Young
Engineering Features of Modern Large Coal Mines in Illinois and Indiana (with Discussion)	C. A. Herbert and C. M. Young
Gas-producer Practice at Western Zinc Plants (with Discussion)	G. S. Brooks and C. C. Nitchie
Testing of Coals for Byproduct Coking and Gas Manufacture (with Discussion)	Horace C. Porter
Occurrence and Origin of Finely Disseminated Sulfur Compounds in Coal (with Discussion)	Reinhardt Thiessen
Geographic Distribution of Sulfur in West Virginia Coal Beds (with Discussion)	I. C. White

NEW YORK MEETING

TITLE	AUTHOR
Rapid Formation of Lead Ore (with Discussion)	H. A. Wheeler
Earth and Rock Pressures (with Discussion)	H. G. Moulton
Examination of Ores and Metals in Polarized Light	Fred E. Wright
Underwatering the Tiro General Mine by Air-lift (with Discussion)	S. F. Shaw
Milling Plant of the Alaska Gastineau Mining Co. (with Discussion)	E. V. Daveler
The Contract Wage System for Mines (with Discussion)	A. K. Knickerbocker
Demonstration Coal Mines (with Discussion)	J. J. Rutledge
Low-temperature Carbonization of Coal	S. W. Parr and T. E. Layng
Anthracite Mining Costs	Discussion by E. W. Parker of the paper by R. V. Norris (Vol. LXI)

INDEX

TITLE	AUTHOR
Index