Acquisition of Tonga Offshore Mining gives it another mining resource
DeepGreen Metals' partner buys ship for deep-sea polymetallic nodule collection
Canadian company has success in lab with processing seafloor polymetallic nodules
Now funded for its feasibility work, the companies partner up for the effort
Nautilus Minerals third and final seafloor production tool (SPT), the auxiliary cutter (AC), began assembly...