Report of Investigations

Front Cover
U.S. Department of the Interior, Bureau of Mines, 1971 - Mineral industries
 

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Page 23 - THE WORK UPON WHICH THIS REPORT is BASED WAS DONE UNDER A COOPERATIVE AGREEMENT BETWEEN THE BUREAU OF MINES, US DEPARTMENT OF THE INTERIOR, AND THE STATE OF OKLAHOMA.
Page 1 - An acid plant was installed in 1929 to treat ^Underlined numbers in parentheses refer to items in the list of references at the end of this report.
Page 9 - Needless to say, this contractor did not submit a bid. "(10) (Reference to specific trade names is made for identification only and does not imply endorsement by the Bureau of Mines...
Page 18 - Selection and Training of Judges for Sensory Evaluation of the Intensity and Character of Diesel Exhaust Odors,
Page 5 - ... characteristics of 13 coalbed samples collected in Colorado. Such data are needed to evaluate the quality of the coals of the West, where most of our low-sulfur-content coal reserves are found. Of the 13 samples Included In this report, 11 had a total sulfur content of 1% or less.

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