1. Borkert J.J., and Cterity, C.E., 1979, “The Economics of In Situ Mining Versus Open Pit Mining,” South Texas Uranium Seminar, SME-AIME, New York, 107.
2. Espenscheid, W.F., Heilweil, I.J., and Yan, T.Y., 1978, “Calcite Control in In Situ Leach Operation,” US Patent 4,103,963, Aug.
3. Greenfield, R.E., and Buswell, A.M., 1922, “Investigation by Means of the Hydrogen Electrode of the Chemical Reactions Involved in Water Purification,” JACS, 44, 1435.
4. Kolthoff, I.M., et al., 1969, “Quantitative Chemical Analysis,” MacMillan Co., New York.
5. Kruger, J., 1929, British Patent 358,604, Sept.