1. “An Environmental Study of the Athabasca Tar Sands,” Intercontinental Engineering of Alberta, Ltd., 1973.
2. R. M. Hardy “Tailings Dams,” Eng. Inst. Canada Western Regional Tar Sands Conference, Edmonton, Alberta, April, 1974.
3. J. H. Cottrell, “Development of an Anhydrous Process for Oil Sand Extraction,” pp. 193-206 of “Athabasca Oil Sands: A Collection of Papers Presented to K. A. Clark on the 75th Anniversary of his Birthday,” ed. M. A. Carrigy; Research Council of Alberta, Edmonton, 1963.