Nayak, B. K., Rajeev, Choudhury, B. and Sahu, P. Geochemical characterization of Baphlimali aluminous ores, Orissa Application of cluster analysis. In: Proceedings of InternationalConference on Emerging Trends in Mineral Processing and Extractive Metallurgy (ICME-2005) held at IMMT, Bhubaneswar from 13-14 June, 2005, edited by Vibhuti N Misra, S.C. Das and T. Subbaiah. New Delhi , Allied Publishers Pvt. Ltd., 2005, pp. 105-110.

Nayak, B.K., Rajeev, Choudhury, B. and Sahoo, P.R. Geochemical Characterization of Baphlimali Aluminous Ores, Orissa Application of cluster analysis. In: Proceedings of International Conference on Emerging Trends in Mineral Processing and Extractive Metallurgy (ICME-2005) held at IMMT, Bhubaneswar from 13-14 June, 2005, edited by Vibhuti N Misra, S.C. Das and T. Subbaiah.. New Delhi , Allied Publishers Pvt. Ltd., 2005, pp. 105-110.

Swamy K.M. and Muralidhar, J. Sonochemical Technology in extractive metallurgy In: Proceedings of International Conference on Emerging Trends in Mineral Processing and Extractive Metallurgy (ICME-2005) held at IMMT, Bhubaneswar from 13-14 June, 2005, edited by Vibhuti N Misra, S.C. Das and T. Subbaiah.. New Delhi , Allied Publishers Pvt. Ltd., 2005, pp. 372-378.

Chattopadhyay, P. On sampling of heterogeneous samples for chemical analysis. In: National Symposium on Importance of Monitoring, Sampling and Analysis of Environmntal Samples / Parameters , Bhubaneswar , pp.41-47, 2006.

Chattopadhyay, P. and Swamy, K.M. Comments on analytical achievability for six important chemical parameters of drinking water. National workshop on Assessment of current and futuristic water quality standards in India held at Kolkata during Sept 20-21, 2005.

Jouhari, A.K., Galgali, R.K., Bhoi, B., Chattopadhyay, P. and Acharya, B.C. Smelting Reduction of chromite for ferro-chrome making, IMMT, Bhubaneswar , NMD-ATM held at IIT, Madras ,Chennai, 14-16 Nov. 2005.

Chattopadhyay, P., Muduli , S.D. and Sarveswara Rao, K. Comments on analytical achievability for ten important chemical parameters of drinking water in Indian context. Intl. Workshop on R&D frontiers in water and wastewater management, January 20-21, 2006, NEERI, Nagpur .