Geology of the eastern part of the Harold D. Roberts Tunnel, Colorado (Stations 690+00 to 1238+58) /

Bibliographic Details
Main Authors:	Warner, Lawrence Allen, 1914- (Author), Robinson, Charles Sherwood, 1920- (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1981.
Series:	Geological Survey professional paper ; 831-D. Engineering geology of the Harold D. Roberts Tunnel, Colorado.
Subjects:	Engineering geology > Colorado > Harold D. Roberts Tunnel. Geology > Colorado > Harold D. Roberts Tunnel. Harold D. Roberts Tunnel (Colo.) Engineering geology. Geology. Colorado > Harold D. Roberts Tunnel.
Online Access:	https://purl.fdlp.gov/GPO/gpo91915

Description
Item Description:	Title from title screen (viewed October 14, 2014). "A description of the geology of and engineering practices used in driving the eastern part of the tunnel through a sequence of almost entirely Precambrian rocks."
Physical Description:	1 online resource (vi, D31 pages) : illustrations, maps + 5 plates.
Bibliography:	Includes bibliographical references ( page D31).