BASALT-CUTTING DRILL BIT-Deep Sea Drilling Project Engineers have found the four roller cone insert bit to be the best when drilling in basalt. Above, a new bit has been installed by the drilling crew and the drill string is ready to be run to the bottom of the Atlantic Ocean on Leg 37 of DSDP.
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" requires written permission of the UC Regents. Permission may be obtained from the UC San Diego Library program having custody of the work. Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library.