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4
Examination of Zinc-Lead Mines in the Wallapai Mining District, Mohave County, Arizona
Report issued by the Bureau of Mines over studies on the zinc-lead mines in Mohave County, Arizona. Descriptions of the characteristics, development, and production of the ore are presented. This report includes tables, maps, and illustrations.
Date:
August 1947
Creator:
Haury, Peter S.
Object Type:
Report
System:
The UNT Digital Library
Analyses of Arizona, California, Idaho, Nevada and Oregon Coals
Technical paper issued by the Bureau of Mines over analyses of coals from many western states. The characteristics of the coals found in each state are discussed in detail. This paper includes tables, and maps.
Date:
1947
Creator:
Andrews, David A.; Hendricks, Thomas A. & Huddle, John W.
Object Type:
Report
System:
The UNT Digital Library
The Pocket Gophers (Genus Thomomys) of Arizona
Distributional study of the pocket gophers of Arizona, including economic status and species and subspecies.
Date:
1947
Creator:
Goldman, Edward A.
Object Type:
Report
System:
The UNT Digital Library
[Santa Fe's "Queen of the Rails"]
Photograph of Santa Fe's "Queen of the Rails" - the "California Limited" train No. 4 eastbound, headed by Engine No. 2928 - a Northern type 4-8-4 locomotive, and a consist of fourteen standard heavyweight cars- crosses the Canyon Diablo Bridge near Winslow, Arizona. Observe this locomotive's automatic-type, elevating smokestack, designed to increase the up-draft, thereby increasing combustion efficiency in the firebox.
Date:
1947~
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History