Abstract. Recent experimental data, including detailed studies of the 191 Ir and 193 Ir metastable states have significantly improved our understanding of the nuclear structure for many iridium isotopes. Combining experimental γ production cross sections with the results of the reaction theory code GNASH, improved evaluations of neutron induced cross sections on several iridium isotopes have been completed. With a focus on improved descriptions of nuclear structure and pre-equilibrium modeling, 191 Ir(n, xn) cross sections are presented.