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Certain artifacts such as shell, coral, stone, and a large number of the lead fragments required essentially no treatment beyond simple washing and air drying. Approximately, 250 ml of mercury was also recovered and likewise required no special care other than carefully pouring off a small amount of seawater which had been recovered along with it. In consideration of the potential health hazards associated with mercury, the very heavy liquid was placed in a tightly sealed polyethylene bottle and placed in a secured location where it cannot be accidently dropped.