1. A model to predict the performance of roadheaders and impact hammers in tunnel drivages;Bilgin,1996
2. Rock Characterisation, Testing and Monitoring: ISRM Suggested Methods,1981
3. Mineral Resources in India 5—Jharia Coalfield;Chandra,1992
4. Interactions between the igneous intrusions and the Gondwana coals with special reference to petrology;Chaudhary,1979
5. Theoretical aspects of coal ploughing;Evans,1958