Technical Report Archive & Image Library (TRAIL) - 2 Matching Results

Search Results

Results: 1 - 2
open access

Some Natural Variations in the Relative Abundance of Copper Isotopes

Description: Abstract: "The relative isotopic abundance of copper has been measured in a number of minerals. Suites of samples from Michigan and the Colorado Plateau have been examined to determine if local variations due to isotopic exchange or diffusion could be found. The relative isotopic abundance of copper in specimens from a number of other places was also determined. The variations noted were small but in most cases were felt to be significant because they were larger than the experimental error (0.… more
Date: August 1957
Creator: Walker, Edward C.; Cuttitta, Frank & Senftle, Frank E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gas Masks for Gases Met in Fighting Fires

Description: Technical paper issued by the Bureau of Mines over the development of gas masks designed for fighting fires. The characteristics of the different types of masks in development are presented. This paper includes tables, illustrations, and photographs.
Date: August 1921
Creator: Fieldner, Arno Carl; Katz, Sidney H. & Kinney, Selwyne P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen