Cover Image

Drilling and preparation of reusable, long range, horizontal bore holes in rock and in gouge /

Bibliographic Details
Corporate Authors: United States. Federal Highway Administration. Office of Research, United States. Federal Highway Administration. Office of Development
Other Authors: Harding, J. C. (John C.)
Format: Government Document Book
Language:English
Published: Washington : Dept. of Transportation, Federal Highway Administration, Offices of Research & Development ; 1975-
Series:Report - Federal Highway Administration ; no. FHWA-RD-75-97
Subjects:
Tunneling.
Rock-drills.
Underground construction.
Table of Contents:
  • v. 3. A development plan to extend penetration capability, increase accuracy, and reduce costs.