Bentonite
Subtitle: its properties, mining, preparation, and utilization
By: by C. W. Davis and H. C. Vacher.  Rev. by John E. Conley.
Contributors: Vacher, Herbert C., joint author.; Conley, John E.; United States. Bureau of Mines.; University of Nevada. Mackay School of Mines.
Series: U. S. Bureau of mines.  Technical paper 609
Publisher: U.S. Govt. print. off.
Published: 1940
Place of publication: Washington
Language: eng
Number of pages: 83
Subjects: Bentonite.
Notes: "Bibliography of references cited in text": p. 70-77.
At head of title:  United States Department of the interior.  Harold L. Ickes, secretary.  Bureau of mines...
"This report represents work done under a cooperative agreement between the Bureau of mines, United States Department of the interior, and the Mackay school of mines, University of Nevada."
A revision of the report issued in 1928 by the U. S. Bureau of mines as its Technical paper 438.  cf. Introd.
"United States patents relating to bentonite": p. 64-70.