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U.S. Bureau of Standards Annual Report: 1921
Report describing the functions and operations of the United States Bureau of Commerce and its divisions during the fiscal year.
Date:
July 1921
Creator:
United States. Bureau of Standards.
System:
The UNT Digital Library
Laboratory Studies of the Trent Process
Report issued by the U.S. Bureau of Mines detailing the laboratory-scale tests of the efficiency of the Trent process in cleaning coal, in which powdered coal, water, and oil is agitated or beaten together to remove impurities. The report includes details in tables detailing the efficiency varying the type and amounts of coal, oil, and water on the process.
Date:
July 1921
Creator:
Perrott, G. St. John & Kinney, Selwyne Perez
System:
The UNT Digital Library