INDEX (cont.) 



chromium (Cr) 13, 14, 17, 56, 57, 



98 

 copper (Cu) vi, vii, 11, 13, 14, 



17, 26, 47, 56, 57, 61-63, 65, 



67-71, 73, 75, 82, 84, 86 

 iron (Fe) 57 

 mercury (Hg) 11, 13, 14, 17, 20, 



26, 57, 66 

 nickel (Ni) 13, 14, 17 

 vanadium (V) 13, 17, 83 

 zinc (Zn) vi, vii, 11, 13, 14, 17, 



56, 57, 67, 69-71, 73, 75, 



82-84, 86 

 trawling 54, 90 

 volume 



difference 3 1 



estimate 8, 18, 28, 31, 36, 38 

 waste 1, 3, 4, 92, 93, 95, 96, 98 



industrial 1, 98 

 waves 1, 42 



