Principles of rock drilling and bit wear
By: George B. Clark.
Series: Colorado School of Mines quarterly,; v. 77, no. 1-2 (Jan.-Apr. 1982); Colorado School of Mines quarterly ;; v. 77, no. 1-2.
Publisher: Colorado School of Mines
Published: 1982
Place of publication: Golden, Colo
Language: eng
Subjects: Boring.; Rock-drills.
Notes: Bibliography: pt. 1, p. 115-117; pt. 2, p. 39-41.
"USPS 452-240"--Verso t.p.