Συλλογικό Έργο:	1991 Rapid Excavation and Tunneling Conference Seatle, Washington), SME, American Institute of Mining, Metallurgical, and Petroleum Engineers, American Society of Civil Engineers, Canadian Institute of Mining, Metallurgy and Petroleum
Άλλοι συγγραφείς:	Wightman, W.D., McCarry, D.C., Wightman, W. D, McCarry, D. C
Μορφή:	Βιβλίο
Γλώσσα:	English
Έκδοση:	Littleton, Colorado : SME, 1991
Θέματα:	Underground construction > Conference proceedings Tunneling > Congresses Excavation > Congresses Underground construction > Congresses