Art... Yup . . .
Thanks for the great article and yes, there is manganese down there to mine..
In 1968 when the Soviet submarine K-129 went down I was in the Navy based in San Diego serving with AirAntiSubmarineSquardon-41. We chased subs. We were privy to this Soviet sub and it's final resting place at the time. Here's one of our carrier birds that was loaded with all kinds of cutting edge electronic equipment that could find a 50 gallon steel drum at 5-6000 meters depth on the floor bottom...