For our experiments, a sample of 500 macadamia nuts
(approximately 5 kg nuts in shell) were cracked by an
experimental mechanical cracker (Sarig et al., 1980).
The results of operating the sieve for a few minutes with
a mixture of cracked nuts are given in table 2 as averaged
values (percent by weight) of 10 replications.
Since half-shells were completely preseparated by a
16 mm screen, five mixtures of different size shells and
kernels were left to be separated by the vibrating screen
method.