The concept is to dredge the phosphate material from the seabed and ship ashore, using conventional dredging techniques for processing and drying. Dredging from minerals is not a new concept and De Beers is currently mining for diamonds off the Namibian coast through their local subsidiary De Beers Marine Namibia (DBNM). DBNM operates a fleet of four mining vessels on its tenements. Mining takes place on the ocean floor at water depths ranging from 90 to 140m. This is shallower than the Sandpiper project which is targeting resources at depths of 190 – 250m. This conservatively holds 60% of the current resource including the areas with a high concentration of P2O5 >22.5%).