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Lead and Zinc Mining and Milling in the United States: Current Practices and Costs
From Object and Scope of Bulletin: "The purpose of this paper to combine in a single volume discussions of the winning of lead and zinc ores from the mines and of the milling of the ores with descriptions of practices at typical properties in the United States."
Date:
1935
Creator:
Jackson, Charles F.; Knaebel, John B. & Wright, C. A.
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1934
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1934, activities, service reports, finance, organizational leadership, and other information about scouting programs.
Date:
April 1, 1935
Creator:
Boy Scouts of America
System:
The Portal to Texas History