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Production Potential of Copper Deposits Associated with Permian Red Bed Formations in Texas, Oklahoma, and Kansas
Report issued by the Bureau of Mines on the copper deposits in the Permian red beds from north-central Texas through Oklahoma, and into southwestern Kansas. Geologic and economic properties of the copper ore are documented. This report includes tables, maps, illustrations, and photographs.
Date:
August 1970
Creator:
Stroud, R. B.; McMahan, A. B.; Stroup, R. K. & Hibpshman, M. H.
Object Type:
Report
System:
The UNT Digital Library
Copper Breaks State Park [Rack Card]
Card advertising Copper Breaks State Park with brief descriptive information and a summary of activities, facilities, and other features of the location.
Date:
August 2014
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Pamphlet
System:
The Portal to Texas History
Interpretive Guide to: Copper Breaks State Park
Pamphlet giving overview of geological history of the Copper Breaks state park from natural development through shut down of mining operation attempts.
Date:
August 2014
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Pamphlet
System:
The Portal to Texas History
Gearing For Bicycles.
Patent relating to "a new and useful improvement in gearing for bicycles and the like, and has for its object to so construct and arrange a device of this description as to avoid sudden shocks or jars which are occasioned by unevenness in the road-bed over which the machine is traveling, and also to enable the rider to exert a sudden force upon the pedals without straining the framework or wheels of the machine" (lines 9-18).
Date:
August 17, 1897
Creator:
Godfray, Ernest H.
Object Type:
Patent
System:
The Portal to Texas History