1. ACAA, 1999. American Coal Ash Association, available by the World-Wide-Web, http:// www.acaa-usa.org/whatsnew/ccpcharts.htm.
2. Standard practice for sampling and sample preparation of iron ores and related materials,1996
3. Standard test method for water absorption of bentonite by the porous plate method,1996
4. Standard specifications for coal fly ash and raw or calcined natural pozzolans for use as a mineral admixture in concrete,1998
5. Standard test method for determination of crushing strength of iron ore pellets,1998