Initial Assessment of Ocean Mining Called Not Serious
the 1980's ofthe so-called"manganese nodules," potato-shaped accretions of metal that are rich in manganese, cobalt, nickel, and copper, and whose origins are uncertain. These early Domes studies established baselines for life and environment in the area before mining began, so that changes pro duced by mining could be compared toManganese: Nodules, Uses, Facts, Ore, Alloys, Metal,Seabed Manganese Mining. Should deep seabed mining become economic, the sources of manganese ore could significantly shift from land to ocean. The estimated manganese nodule resource dwarfs land-based resources and could greatly diversify worldwide manganese sources. Much of the resource is in international waters.Deep-Ocean Mining: Technologies For Manganese Nodules And,,This paper reviews research, development and design aspects of recent technologies for deep-ocean mining systems to recover manganese nodules and cobalt-rich manganese crusts from the seafloor at an 800-6,000-m depth. It also discusses selective technological challenges. The manganese crust is characterized on the basis of preliminary data.