Investigation of optimum thrust, cutting speed, and water pressure for tungsten carbide and polycrystalline diamond compact roof- bolt drill bits
By: by Laxman S. Sundae, Thomas W. Smelser, and Wayne L. Howie.
Contributors: Smelser, T. W.; Howie, Wayne L.; United States. Bureau of Mines.
Series: Report of investigations -- 9574.; Report of investigations (United States. Bureau of Mines) -- 9574.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1995
Place of publication: [Washington, D.C.?]
Language: eng
Format: Microform
Number of pages: 20
Subjects: Bits (Drilling and boring)
Notes: Distributed to depository libraries in microfiche.

Shipping list no.: 97-0751-M.

Includes bibliographical references (p. 18).

Microfiche. [Washington, D.C.?] : Supt. of Docs., U.S. G.P.O., [1997] 1 microfiche : negative.