Volume 139
Coal Division 1940
Papers and Discussions Presented before the Division at Meetings Held at Chicago, October 13-15, 1938; New York February 13-16, 1939; Columbus, October 5-7, 1939 and New York, February 12-15, 1940

Title Page

Foreword – C. E. Lawall

Contents

A.I.M.E. Officers and Directors

Coal Division Officers and Committees

PAPERS:

TITLE	AUTHOR
A Decade of Sampling (T.P. 1044, with discussion)	E. S. Grumell
Influence of Mechanization on Location of Coal Production in Illinois (T.P. 1021, with discussion)	Paul Weir
Mechanical Mining by the Consolidated Coal Company (T.P. 1063)	G. Stuart Jenkins
Performance and Equipment Costs in Shaker-conveyor Mining of Anthracite Coal (T.P. 1192, with discussion)	John S. Marshall
Recent Trends in Rock Dusting to Prevent Dust Explosions in Coal Mines (T.P. 975, with discussion)	H. P. Greenwald
Factory Testing of Propeller Mine Fans (T.P. 1041, with discussion)	Raymond Mancha
Safety Practices of the Koppers Coal Company (T. P. 1022, with discussion)	L. C. Campbell
Organized Safety in the Anthracite Mines of the Susquehanna Collieries Company (T.P. 976, with discussion)	C. G. Brehm
Ground Movement and Subsidence Studies in Mining Coal, Ores and Nonmetallic Minerals (T.P. 1014)	George S. Rice
Collapsible Steel Props in Longwall Anthracite Mining (T.P. 1093, with discussion)	John W. Buch
Development and Application of Concrete and Steel Roof Support Used on Haulageways, Pump Rooms, and Main Openings in the Anthracite Mines of Pennsylvania (T.P. 1193, with discussion)	W. W. Wirth and W. L. Dennen
Economics of Wood Preservation in Underground Coal Mining (T.P 1067, with discussion)	Reamy Joyce
Longwalling on Timber in Alabama Coal Mines (T.P. 1211)	L. I. Cothern
Effects of Artificial Support in Longwall Mining as Determined by Barodynamic Experiment (T.P. 1020, with discussion)	P. B. Bucky and R. V. Taborelli
Photoelasticity and Its Application to Mine-pillar and Tunnel Problems (T.P. 1140, with discussion)	David Sinclair and Philip B. Bucky
Launder and Table Washing of Fine Coal (T.P. 1210, with discussion)	J. T. Crawford, C.P. Proctor and J.A. Younkins
Flocculation and Clarification of Slimes with Organic Flocculants (T.P. 1052, with discussion)	George R. Gardner and Kenneth B. Ray
Measurement of Pressures Developed during the Carbonization of Coal (T.P. 1118, with discussion)	Charles C. Russell
Production of Low-temperature Coke by the Disco Process (T.P. 1176, with discussion)	C. E. Lesher
Proportions of Free Fusible Material in Coal Ash, as an Index of Clinker and Slag Formation (T. P. 1175, with discussion)	G. B. Gould and H. L. Brunjes
Use of Pulverized Coal as Fuel for Open-hearth Furnaces Melting Steel for Castings (T.P. 1119, with discussion)	Joseph P. Kittredge

INDEX

TITLE	AUTHOR
Index