Semi-annual report on the project to design and experimentally test an improved geothermal drill bit
By: by L. M. Barker, S. J. Green ; submitted to Energy Research and Development Administration, Division of Geothermal Energy, ; submitted by Terra Tek, inc.
Contributors: Green, S. J.; Maurer, William C.; United States. Dept. of Energy. Division of Geothermal Energy.; United States. Energy Research and Development Administration. Division of Geothermal Energy.; Terra Tek, Inc.
Publisher: Dept. of Energy, [Division of] Geothermal Energy; for sale by the National Technical Information Service
Published: 1979
Place of publication: [Washington]; Springfield, Va
Language: eng
Subjects: Bits (Drilling and boring); Geothermal engineering.
Notes: "TID-28685" ; "TID-28704."

Additional author: W. C. Maurer.

ERDA contract no. E(10-1)1546.

Work performed under contract no. EY-76-C-07-1546.

Microfiche available in the NTIS files.