Geotechnical properties of oceanic polymetallic nodule sediments

The geotechnical data obtained from the investigation of marine polymetellic nodules in 1994 are used, and are combiped with the data concerned to make synthetic analyses. The type of marine sediment, geotechnical properties and soil strength, etc. are discussed. They will provide basis for design and manufacture of engineering facilities and the equipment to mine the polymetallic nodules used in ocean bed in the future.