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.