  Two-neutron knockout reactions from nuclei in the proximity of the proton
dripline have been studied using intermediate-energy beams of neutron-deficient
$^{34}$Ar, $^{30}$S, and $^{26}$Si. The inclusive cross sections, and also the
partial cross sections for the population of individual bound final states of
the $^{32}$Ar, $^{28}$S and $^{24}$Si knockout residues, have been determined
using the combination of particle and $\gamma$-ray spectroscopy. Similar to the
two-proton knockout mechanism on the neutron-rich side of the nuclear chart,
these two-neutron removal reactions from already neutron-deficient nuclei are
also shown to be consistent with a direct reaction mechanism.
