With nearly 70 percent of the earth’s surface located underwater; it is no surprise that exploration companies are turning their attention to the bedrock and sediments below the ocean as a potential source of minerals. This so called “marine mining” is not a new undertaking. The first marine exploration and mining took place in the 1960’s and 1970’s when miners excavated manganese nodules from the ocean floor. These nodules provided a good source of nickel, copper and cobalt.
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