[Letter from James Armour Lindsay to Mr. I. H. Kempner, September 24, 1949] (open access)

[Letter from James Armour Lindsay to Mr. I. H. Kempner, September 24, 1949]

Letter from James Armour Lindsay to Mr. I. H. Kempner discussing their hopes Kempner will visit the schools on his trip through the Southeast.
Date: September 24, 1949
Creator: Lindsay, James Armour
Object Type: Letter
System: The Portal to Texas History
Bauxite: Float-and-Sink Fractionations and Flotation Experiments (open access)

Bauxite: Float-and-Sink Fractionations and Flotation Experiments

From Introduction: "This report presents the results of an investigation of the physical properties and characteristics of bauxite, with special reference to the possibility of applying commercial methods of concentration to low-grade bauxite."
Date: 1929
Creator: Gandrud, B. W. & De Vaney, Fred D.
Object Type: Report
System: The UNT Digital Library
Mining and Treatment of Feldspar and Kaolin in the Southern Appalachian Region (open access)

Mining and Treatment of Feldspar and Kaolin in the Southern Appalachian Region

From Introduction: "The investigation here reported has to do only with the dikes of the southern Appalachian region, in which abundance of each mineral is as in the order given above."
Date: 1913
Creator: Watts, A. S.
Object Type: Report
System: The UNT Digital Library
Bulletin of the Texas Archeological Society, Volume 46, 1975 (open access)

Bulletin of the Texas Archeological Society, Volume 46, 1975

Annual journal of the Texas Archeological Society documenting research and findings of members as well as activities of the organization.
Date: 1975
Creator: Texas Archeological Society
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History