[en] This report presents the results of a laboratory effort to determine the unconfined strength and elastic properties of dome salt from the Diamond Crystal Mine, Jefferson Island, LA. The effects of sample size and geometry on the compressive properties of this salt were investigated, and relationships for compressive strength and deformational modulus as a function of specimen diameter and length to diameter ratio were developed. The results of a finite-element analysis of the stress state in a specimen loaded between steel platens are also presented. 20 figures, 4 tables