from being retained against the sides, and fins to the bin dump water flume to straighten water flow. The summary of these runs is shown in Fig. 5. The use of the modified brush bed reduced the mixing significantly over the unmodified packhouse (probability, p=0.017, T-test), but the bin dump modifications did not provide a significant improvement for the runs where the bin dump fins were added (p=0.47, T-test). The brush bead and bin dump modifications were also significantly (p=0.002) better than the unmodified system