Using precast reinforced-concrete sets in the Pioneer Tunnel of Great Northern Railway's Cascade Tunnel, King County, Wash.

Author:	Parsons, Edward W.
Year:	1958
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7858
Series:	Information circular / United States. Bureau of Mines ;
Report Number:	7858
Subjects:	Precast concrete
	Tunnels
Link:	https://hdl.handle.net/2027/mdp.39015078455246