Drill Blast Excavation to Within 1m Existing Steel Lined Penstock Tunnel
Author(s): M. Kellaway, D. Young, G. Revey
46th Annual H.G. Acres Seminar, Case Studies in Water Power -- Design, Construction, and Rehabilitation April 8, 2015. Niagara Falls, Ontario
46th Annual H.G. Acres Seminar, Case Studies in Water Power -- Design, Construction, and Rehabilitation April 8, 2015. Niagara Falls, Ontario