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General and Engineering Geology of the Wray Area, Colorado and Nebraska
From abstract: Most of the formations in the Wray area are fair foundation materials, although good construction materials are scarce. The gravel of the Grand Island formation and the gravels in the Ogallala formation contain large quantities of clay, silt, sand, and calcium carbonate, and have very few pebbles larger than one-half inch in diameter.
Date:
1953
Creator:
Hill, Dorothy Rachel & Tompkin, Jessie M.
System:
The UNT Digital Library
Reconnaissance Investigations for Uranium in Black Shale Deposits of the Western States during 1951 and 1952
Report discussing investigations seeking uranium in deposits of black shale around the geographical areas of the Western States
Date:
September 1953
Creator:
Duncan, Donald Cave
System:
The UNT Digital Library