Polymetallic Nodules

Some articles on polymetallic nodules, nodules, polymetallic, nodule:

National Institute Of Oceanography, India - Research Contribution
... An example of the dual role is a project on polymetallic nodules that has been sponsored by the Government of India at the institute for well over 25 years ... On 26 January 1981, NIO hauled up polymetallic nodules from a depth of 4,800 m in the western Indian Ocean using its first research vessel, RV Gaveshani, which was acquired in 1976 ... This project, together with exploration for polymetallic nodules, established close ties between NIO and the then Department of Ocean Development and ...
International Seabed Authority - Current Activities
... specific seabed areas in which they were authorized to explore for polymetallic nodules ... the Authority received two new applications for authorization to explore for polymetallic nodules, coming for the first time from private firms in developing island nations of the Pacific ... been the adoption, in the year 2000, of regulations governing exploration for polymetallic nodules ...
Natural Resource Economics - Perpetual Resources Vs. Exhaustibility - Trend Towards Perpetual Resources
... Exploration of the ocean bottom in the last fifty years revealed manganese nodules and phosphate nodules in many locations ... More recently, polymetallic sulfide deposits have been discovered and polymetallic sulfide "black muds" are being presently deposited from "black smokers" The ... A Korean firm plans to start developing a manganese nodule recovery operation in 2010 the manganese nodules recovered would average 27% to 30% manganese, 1.25% to 1.5% nickel, 1% to 1.4% copper, and 0.2% to 0.25 ...