Undisturbed sediment cores 30-40 cm long should be collected near the 
drill sites at stations 5 and 16 at least once per year for at least two 
years. Ba depth profiles of the fine and bulk sediment will determine 
the rates of sediment mixing processes and will determine the relative 
importance of erosion and mixing in explaining the decrease in the Ba 
concentration in surface sediment. 
Stations that will be sampled for benthic infaunal studies beyond the 
third year of this program should also be sampled for metals. Particular 
emphasis should be given to stations to the west of the drilling area 
(stations 7A, 8, 9, 12, 13, 13A, and control station 2) to evaluate any 
long-term accumulation of Ba in expected areas of deposition. 
Further analysis and publication of these results should be accomplished 
in order to maximize the scientific value of this program. 
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