Rapid excavation, problems and progress
Subtitle: proceedings of the tunnel and shaft conference, Minneapolis, Minnesota, May 15-17, 1968. Edited by Donald H. Yardley.  Sponsored by School of Mineral and Metallurgical Engineering, Dept. of Civil Engineering, University of Minnesota.  Co-sponsors: Society of Mining Engineers of AIME [and] American Society of Civil Engineers.
Contributors: Yardley, Donald H.,; Minnesota. University. School of Mineral and Metallurgical Engineering; Society of Mining Engineers of AIME; American Society of Civil Engineers
Publisher: Society of Mining Engineers of the American Institute of Mining, Metallurgical and Petroleum Engineers
Published: 1970
Place of publication: New York
Language: eng
Number of pages: 410
Subjects: Tunneling -- Congresses; Shaft sinking -- Congresses