August 11, 1964 (cont.) Eight gallons of sea water were collected from 5 meters of the bottom in the Mike Crater. Samples were taken with PVC Van Dorn samplers. Thirty gallons of sea water were pumped within one meter of the bottom of the Mike Crater for radiochemical analysis. Two half-meter nets and for plankton samples. 1 one-meter net #6 mesh were towed All samples were pooled.