Abstract
This paper summarizes the main physical and economic features of manganese nodules, cobalt‐rich manganese crusts and marine polymetallic sulfide deposits in the Pacific region. The most favourable areas for deposits of commerical interest are shown on a map of the Pacific. The gross metal sales values of hypothetical mines are compared to estimated size of world metal markets in the year 2000. It is suggested that a prudent policy for the major developed‐country governments is to support research on those marine minerals that appear to have the potential to become a major source of minerals in the next century.
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