Needed event rates, scaled to an ejecta mass of 0.03 M_⊙, if NSNS mergers are to produce all r-process (in solar proportions) above a minimum nucleon number ^> A (solid black line). Also shown are the estimated rates (90% conf.) for NSNS mergers from the population synthesis study of Kim et al. (2015), the sGRB rates based on Swift data from Petrillo et al. (2013) and the LVC estimate based on the first detected NSNS merger event.