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Sakha, S. and Sarkar, G.G. and Bagchi, S. (1973) Upgrading of dirty slack of non-coking coals from outlying coalfields. Journal of Mines, Metals & Fuels, 21 (7). pp. 201-204. ISSN 0022-2755
Sarkar, G.G. and Basu, D. and Sakha, S. and Moitra, A.K. (1961) The Planning of a Central Coal Washery at Bhojudih. Journal of Mines, Metals & Fuels, 9 (6). pp. 1-10. ISSN 0022-2755
