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New type of gravitometer for measuring density of spoil being pumped, developed at Canterbury University College, Christchurch, New Zealand; instrument depends for operation on greater attenuation of gamma rays by mud-seawater mixture than by sea water alone; main components are gamma ray source, measuring head, control unit and remote indicator; apparatus is on dredger Canterbury which has hopper capacity of 30,000 cu ft, and carrying capacity of 1200 tons.
New type of gravitometer for measuring density of spoil being pumped, developed at Canterbury University College, Christchurch, New Zealand; instrument depends for operation on greater attenuation of gamma rays by mud-seawater mixture than by sea water alone; main components are gamma ray source, measuring head, control unit and remote indicator; apparatus is on dredger Canterbury which has hopper capacity of 30,000 cu ft, and carrying capacity of 1200 tons.
Density of spoil in suction dredging
Dock Harbour Authority
Cashin, J.A. (author)
1956
4 pages
Article (Journal)
English
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