Experimental characterization of rheology is performed using the state-of-the art ARES-G2 rheometer. Among several ongoing projects is the rheological characterization of nuclear waste slurries at Hanford site in collaboration with the Pacific Northwest National Laboratories (PNNL). Boehmite (AlO(OH)) particles have been identified as a major component affecting the rheology of these slurries. These are anisotropic, polydisperse, cohesive particles that exist in a high salt environment. We study the rheological behavior of this system at different ionic concentrations, shear rates and volume fractions.