Rock fill dam, closing 40 ft gorge through which Palisade Lake at City of Vancouver discharges was accessible only by air; material transport was performed by helicopter, capable of lifting 400 lb; 35, 000 lb were transported during two mo of 1948 at cost of 10.85¢ per lb or $80 per flying hr; during four mo of 1949 total of 305,000 lb were transported at cost of 5.5¢ per lb or $ 60 per hr.
Helicopter delivers material for small dam at rough site
Western Construction News
Western Construction News ; 25 , n 3
1950
3 pages
Article (Journal)
English
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