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Coke from Low-Ash Appalachian Coals for Carbon Electrodes in Aluminum Industry with a Chapter on Comparison of Results Obtained by Trent Process for Cleaning Coal with Those by Float-and-Sink Methods

Description: Report issued by the U.S. Bureau of Mines on testing conducted on coking coal samples for carbon electrode use in aluminum production. The testing methods, and results are presented. This report includes tables.
Date: November 1943
Creator: Selvig, W. A.; Ode, W. H.; Gibson, F. H. & Davis, Joseph D.
Item Type: Report

Experimental Investigation of Entrance-Region Heat-Transfer Coefficients

Description: Experimental results of tests made at the Langley Memorial Aeronautical Laboratory are presented to show how heat-transfer coefficients can he increased by a method utilizing the high rate of heat transfer known to exist on any heat-transfer surface in the region adjacent to the edge on which the cooling or heating fluid impinges. The results show that, for the same pressure drop, the average surface heat-transfer.coefficient can be increased 50 to 100 percent when a cooling surface having a length of four inches in the direction of fluid flow is cut to form twenty fins with a length of 0.2 inch in the direction of fluid flow and the fins are sharpened and staggered in the air stream. The percentage of increase in the surface heat-transfer coefficient obtained as a result of shortening the length of the cooling surface varies with the pressure drop of the cooling fluid in passing the surface, the increase being largest when small pressure drop is used and smallest when high pressure drop is used.
Date: November 1, 1943
Creator: Joyner, Upshur T
Item Type: Report

History of Water Flooding of Oil Sands in Oklahoma

Description: Report issued by the U.S. Bureau of Mines on the oil production from water injection methods. As noted in the introduction, "it is the purpose of this report to present data such as volume of oil produced monthly, volume of water injected monthly, spacing of wells, number of injection wells and oil wells, and other such pertinent information" (p. 5). This report includes tables, graphs, maps, and illustrations.
Date: November 1943
Creator: Taliaferro, David Benjamin & Logan, David M.
Item Type: Report

Recent Developments in Fuel Supply and Demand

Description: Report issued by the U.S. Bureau of Mines discussing the recent supply and demand of fuels. As stated by the author, "my purpose in this address is to review the changes in fuel supply and demand since 1937 and to give you my views on the outlook for the future" (p. 1). This report includes tables, and illustrations.
Date: November 1943
Creator: Fieldner, Arno Carl
Item Type: Report

Some investigations of the general instability of stiffened metal cylinders VII : stiffened metal cylinders subjected to combined bending and torsion

Description: This report summarizes the work that has been carried on in the experimental investigation of the problem of the general instability of stiffened metal cylinders subjected to combined bending and torsion at the C.I.T. This part of the investigation included tests on 26 sheet-covered specimens. An interaction curve for the case of combined bending and torsion is presented. The results of tests of 17 specimens subjected to pure torsion are also given.
Date: November 1, 1943
Item Type: Report