  The nucleosynthesis of heavy elements in the scenario for the evolution of a
close binary of neutron stars differing greatly in mass is considered. In
contrast to the scenario for the merger of two neutron stars of comparable
masses considered repeatedly in the literature, the evolution of such a binary
at the final stage consists in a rapid mass transfer to the more massive star
and an explosive disruption of the low-mass component. We provide the details
of the explosion and calculate the abundances of the heavy elements produced in
this process for various initial conditions.
