Wastes are not completely worthless if one goes by the claims of scientists at the international conference on fly ash disposal and utilisation held in the New Delhi recently. According to them, fly
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/waste-product-can-be-milched-millions
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment