Depth, Feet 





5,500 



2,350 



Steels 



O 



• 



Cast Irons 



A 



A 



Austenitic Cast 



D 



■ 



Irons 







200 



Figure 19, 



400 600 800 

 Exposure , Days 



1000 



1200 



Statistical median curves for steels, cast irons 

 and austenitic cast irons in the bottom sediments, 



