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Bhattacharya, Jayanta and Ray, S.C. "Problems and prospects of coal industry in India", Journal of Institution of Engineers (I), Vol.78, pp.31-36, Nov.  '97.

Samanta, B., Bhattacharjee, A. and Ray S.C.1 1998, "A statistical quality control model for surface mine operations", Proceedings of the International Conference on Opencast Mining, Calcutta, July 09-11, pp.307-320.

Bhattacharjee, A. and Ray S.C., 1997, "Accident analysis and prevention: a model", Proceedings of the national seminar on FOSM1N, Chennai, August 20-21, 1998, pp.60-64.

Maiti, J., Bhattacharjee, A. and Ray S.C., 1997, "Safety performance analysis of coal mines - a necessity for survival", Proceedings of the national conference on Mining Engineering - survival codes for the future, Calcutta, December 19-20, 1997.

Bhattacharya, J. and Ray, S.C., "Mining engineering in the future - it has to change itself to survive", Proceedings of the national conference on Mining Engineering - survival codes for the future, Calcutta, December 19-20, 1997.