... comprised of macerated marine biota and disturbed seabed sediments, and the surface plume of ingested benthic matter and abraded manganese nodule. Techniques for minimizing the disturbance of the seabed and limiting ingestion of benthic material in the dredge pipe and means for controlling the surface plume...

... in the paper include: ship dredge pipe pipe handling equipment pumping system and instrumentation. The information gathered from the prototype dredging test confirmed that new technology combined with conventional equipment can be used to permit the commercial hydraulic dredging of deep ocean...