1. Beneficiation of alumina-rich Indian iron ore slimes;Pradip;Metals, Materials and Processes,1995
2. Das SK, Kumar S, Singh KK, Ramachandrarao P. Utilisation of fly ash in making ceramic floor and wall tiles. National Seminar on Recovery of Valuable By-products from Intermediate Secondaries in Non-Ferrous Industries. Ghatsila, India, 1996.
3. Bandopadhyay A, Das SK, Singh KK. In the pursuit of waste free metallurgy. National Seminar on Advances in Low and No Waste Technology, Jamshedpur, India, 1996.
4. Das SK, Kumar S, Singh KK, Ramachandrarao, P. An innovative approach towards utilisation of waste generated from iron and steel industries. National Seminar on Environment and Waste management in Metallurgical Industries, Jamshedpur, India, 1996.
5. Das SK, Kumar S, Roy KC, Mittra BK, Das US, Gupta KN. High value added ceramic products from fly ash: developmental activities in NML. National Workshop on Fly Ash Utilisation, Bhopal, India, 1995.