1. AASHO (1970) Standard Specifications for Highway Materials and Methods of Sampling and Testing, Part 2, American Association of State Highway Officials, Washington, DC.
2. ASTM D4644-87 (1987) Slake durability of shales and similar weak rocks, Annual Book of ASTM Standards, Vol. 4.08, Am. Soc. for Testing and Materials, Philadelphia, pp. 848?50.
3. Bishop, A.W. (1971) Stress strain behaviour of soil, Proceedings of the Roscoe Memorial Symposium, Whitefriars, London, pp. 3?58.
4. Bishop, C.S. and Simon, N.R. (1976) Selected soil mechanics properties of Kentucky coal preparation plant refuse, Proceedings of the Second Kentucky Coal Refuse Disposal and Utilization Seminar, Pineville, Kentucky, pp. 61?67.
5. Bland, A.E., Robl, T.L. and Rose, J.G. (1976) Kentucky coal preparation plant refuse characterization and uses, Proceedings of the Second Kentucky Coal Refuse Disposal and Utilization Seminar, Pineville, Kentucky, pp. 21?35.