Design improvements in box dredges to enhance the collection of manganese nodules
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Design of three box dredges along with the technique and modifications effected to anable bulk sampling of manganese nodules is presented. Incorporation of a sled, angled cutting edges, retention plates and increased size of the dredge resulted in significant increase of the dredge haul. Consequent field data is included. Design of a simple feeding concept to enhance the concentration of nodules at the dredge mouth is briefly dealt with for future application.
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