Leaching Nonsulphide Copper Ores with Sulphur Dioxide (open access)

Leaching Nonsulphide Copper Ores with Sulphur Dioxide

Report issued by the Bureau of Mines discussing the sulfurous acid leaching of the Southwest experiment station. Operations and analyses of the experiment station are presented. This report includes tables, illustrations, and photographs.
Date: May 1923
Creator: Van Barneveld, Charles E. & Leaver, Edmund S.
System: The UNT Digital Library
Motor Gasoline Properties, Laboratory Methods of Testing, and Practical Specifications (open access)

Motor Gasoline Properties, Laboratory Methods of Testing, and Practical Specifications

Technical paper issued by the Bureau of Mines over studies conducted on motor gasoline. The methods, properties, and results of the studies are presented and discussed. This paper includes tables and an illustration.
Date: May 1917
Creator: Dean, E. W.
System: The UNT Digital Library
Safe Mechanical Equipment for Use in Shaft Sinking (open access)

Safe Mechanical Equipment for Use in Shaft Sinking

Technical paper issued by the Bureau of Mines over shaft sinking safety. Safe mechanical equipment and procedures are discussed. This paper includes illustrations.
Date: May 1922
Creator: Kudlich, R. H.
System: The UNT Digital Library
Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma (open access)

Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma

Technical paper issued by the Bureau of Mines over studies of Oklahoma coal mines. As stated in the introduction, "this report describes the systems of mining used, points out their defects, and presents suggestions for improved methods, more especially as regards the applicability of different modifications of the panel system to mining coal in Oklahoma" (p. 5). This paper includes tables, maps, and illustrations.
Date: May 1918
Creator: Rutledge, J. J. & Harrington, Daniel
System: The UNT Digital Library
Waste of Oil and Gas in the Mid-Continent Fields (open access)

Waste of Oil and Gas in the Mid-Continent Fields

Technical paper issued by the Bureau of Mines over studies of waste in oil and gas fields in the mid-continent area. As stated in the introduction, this report "describes the general amounts and kinds of waste, and attempts to show the importance of conserving these natural resources" (p. 5). This paper includes tables, maps, illustrations, and photographs.
Date: May 1914
Creator: Blatchley, Raymond S.
System: The UNT Digital Library