A Study of Oxidation of the Oil in Two Air-and Air-Gas-Repressuring Projects (open access)

A Study of Oxidation of the Oil in Two Air-and Air-Gas-Repressuring Projects

Report issued by the U.S. Bureau of Mines on the oxidation levels caused from different oil recovery processes. Experiments were conducted to determine the effect of air on crude oil, and the degree of oxidation. This report includes tables, and a map.
Date: January 1937
Creator: Johnson, T. W. & Taylor, Sam S.
System: The UNT Digital Library
The Flora of the New Albany Shale: Part 1. Diichnia Kentuckiensis, a New Representative of the Calamopityeae (open access)

The Flora of the New Albany Shale: Part 1. Diichnia Kentuckiensis, a New Representative of the Calamopityeae

Abstract: A new genus of the Cycadofilicales, Diichnia, is described from the New Albany shale, of late Devonian age, in central Kentucky. The one known species, which is based on stem material showing internal structure, belongs in the family Calamopityeae. Foundation for the generic segregation is seen in the double leaf truce of the genotype, D. kentuckiensis, in contrast with the originally single trace in other known representatives of the family.
Date: 1936
Creator: Read, Charles B.
System: The UNT Digital Library
Method and Cost of Dredging Sand and Gravel by the Ohio River Sand Co., Louisville, Kentucky (open access)

Method and Cost of Dredging Sand and Gravel by the Ohio River Sand Co., Louisville, Kentucky

Report issued by the U.S. Bureau of Mines discussing dredging methods of used by the Ohio River Sand Company. The different methods and costs used to recover gravel and sand are described. This report includes tables and illustrations.
Date: January 1931
Creator: Duffy, J. Hamilton
System: The UNT Digital Library
Safety Cars of the United States Bureau of Mines (open access)

Safety Cars of the United States Bureau of Mines

Report issued by the U.S. Bureau of Mines discussing the mine stations and safety cars used to reach miners in distress. As stated in the report, "the purpose, equipment, personnel, and construction of its safety cars" is presented. This report includes an illustration, and a map.
Date: March 1931
Creator: Forbes, J. J. & Ankeny, M. J.
System: The UNT Digital Library