Seventeen quasi-static experiments on rock salt from three gulf coast coast domes are presented. The experiments were run at a constant loading rate in compression and extension, over pressures ranging from 0.1 to 13.8 MPa and temperatures ranging from 22 to 100¿ C. Minor variations in sample grain sizes and composition did not appear to have distinct effect on strength and behavior trends. Specimen strength was directly related to the least principal stress and inversely related to temperature; furthermore, pressure and temperature increases resulted in larger axial strains to failure (ductility). While strengths in extension and compression were similar, ultimate strains were substantially higher in compression than in extension.