Ch. 2— Resource Assessments and Expectations • 77 



Photo credit: Don Foot, U.S. Bureau of Mines, Salt Laite City 



Cobalt-enriched ferromanganese crust material over 2 inches thick dredged from flank of a seamount in the Pacific Ocean. 



While samples of crust material have been recovered for scientific purposes, commercial recovery would depend on the 



development of practical and efficient methods of separating the crust from the basaltic substrate 



and conveying it to the surface. 



