Evaluating the Economic Significance of Polymetallic Sulfides Deposits Evaluating the Economic Significance of Polymetallic Sulfides Deposits Broadus, J.M. and R.E. Bowen 15th Annual Offshore Technology Conference in Houston, Texas, May 2-4, 1983, pp. 419-426, 1983 WHOI-R-83-010 Posted in 1983, Energy and Marine Mineral Resources, Marine Policy