LEGEND 







water 



sediment 



6,000 ft 











NCEL, 0.6Fe 



O 



• 





INCO^, 0.03 Fe 



A 



▲ 



2,500 ft 











NCEL, 0.6 Fe 



D 



■ 





INCO^, 0.03 Fe 

 Pacific, IIMCO^, 0.03 Fe 



V 



▼ 



Surface, 



1 



ZJ 



600 800 



Exposure (days) 



]4^& 



Figure 40. Corrosion rates of 80 - 20 copper - nickel al loy. 



