Future---deep ocean mining. Anon. Proc. 13th Ship offshore structures congress, Vol. 2, Structural design of pipeline systems Report, Chapter 10, pages 241--242. (See abstract 1369 for complete reference).
Attention is drawn to marine manganese nodules which exist in water depths in the range 3--6 Km on the ocean floor. It is considered that future petroleum exploitation will benefit from the research into deep ocean mining. Current research and development is reviewed briefly.