Two FASC patents cited on page 38.......
Kantonen, C.L., Nichole, J.B., and Salter, R., "Method of Recovery of Precious Metals & Heavy Minerals," U.S. Patent No. 6,682,005 (2004).
Mehrabadi, M.M. and Cowin, S.C., J. Mech. Phys. Solids, 26, 269 (1978).
Mugele, R.A. and Evans, H.D., Ind. Eng. Chem., 43, 1317 (1951).
Narayan, S. and Kantonen, C.L., "Recovery of Fuel and Clay from a Biomass," U.S. Patent No. 7,481,385 (2009)