  The recent observation of neutron stars merger by the Laser Interferometer
Gravitational-Wave Observatory (LIGO) collaboration and the measurements of the
event's electromagnetic spectrum as a function of time for different
wavelengths have altered profoundly our understanding of the r-process site as
well as considerably energized nuclear astrophysics research efforts. R-process
abundances are a key element in r-process simulations, as a successful
calculation must account for these abundances in the final debris of a stellar
cataclysmic event. In this article, mankind's complete knowledge of neutron
cross sections obtained over the last 80 years, as encapsulated in the latest
release of the Evaluated Nuclear Data File (ENDF/B) library, is used to obtain
solar system r-process abundances in a comprehensive data approach. ENDF/B
cross sections have been successfully used for decades in nuclear power and
defense applications and are now used to obtain r-process abundances in a fully
traceable and documented way. This article r-process abundances provide
complementary insights on the astrophysical events, overall quality of neutron
capture data in the astrophysical region of temperatures, and demonstrate
issues with the s-process contribution subtraction procedure.
