Dr. Ajoy Kumar Moitra received his graduate and Doctorate from Indian School of Mines, Dhanbad. He joined the Geological Survey of India and retired in the year 2004 as Director. During his stay in Geological Survey of India (1971-2004), he carried out systematic mapping and exploration. He was engaged in study of stromatolites and related microbiota. After retirement, Dr Moitra carried out detailed exploration for coal, iron ore and limestone for both green and brown fields. Apart from many papers in prestigious journals, he has written two books. Dr. Jayanta Bhattacharya is a Professor in the School of Environmental Science and Engineering and a Professor of Mining Engineering at Indian Institute of Technology, Kharagpur , He is the founding Head of the School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur. Prof. Bhattacharya is a famous scientist in the area of environmental technology and product development. Prof. Bhattacharya pioneered research of laboratory and wetland schemes of wastewater treatment as a constructed plant based systems what presumably one day bioremediation systems would look like and have the capacity to perform. A continuous theme of research by his team is to develop new technologies and products for green treatment options. He is also known all over for his academic contributions in the area of environmental clearance, land acquisition, rehabilitation and resettlement of people. He has more than 120 papers in various national and international journals and conferences, and works as an editorial board member for 3 international journals. He has written 7 books and edited more than 10 books jointly written with his peers from around the world. He has completed guidance of 6 PhD scholars and is in the process for 10 more. Professor J. R. Kayal did his M Sc (Applied Geophysics) from the Indian School of Mines, Dhanbad and PhD from the Victoria University of Wellington, New Zealand. He retired as Deputy Director GeneralGSI. He has been an Adjunct Professor at the IIT, Kharagpur, IIT-ISM, Dhanbad, Tezpur University, Assam, an Emeritus Professor at the Jadavpur University, Kolkata, and Visiting Professor at the University of Tokyo, Japan, and Strasbourg University, France. Presently, he is an Adjunct Professor, ISR, Gandhinagar and the NIT, Agartala. He led several international research projects sponsored by the Department of Science & Technology (DST), Government of India, and was a guest faculty to the UNESCO (France) and ICTP (Italy). He is author of more than 130 peered reviewed research papers in national and international journals and authored one book. Dr. Biblap Mukerji received an M.Sc. in Applied Geology from Indian School of Mines, Dhanbad, in 1970, and a Doctorate in “Geospatial Modelling of Copper Mineralization in Singhbhum Belt, Jharkhand in 2004 from Indian School of Mines, Dhanbad. He served on the Geological Survey of India for 36 years and retired as Deputy Director General, Operation, and West Bengal Sikkim & Andaman. He teaches Statistics, Geostatistics and GIS to officers and students of various organizations. Currently he is a consultant geologist and also an advisor to a mineral exploration company. He has number of scientific papers to his credit, published in National and International Journals. Life Member of Mining Geological and Metallurgical Institute of India. Dr. Sri Ajoy Kumar Das has put in more than 41 years of overall experience with around 10 years in operation and management of both UG &OC coalmines of Western Coalfield Ltd. and balance in Marketing with M/s Greaves Cotton Ltd and Mahindra & Mahindra. Dr. Das had undergone intensive training in implementation of Modern Mining machines in U.K, Germany, France, and Sweden. In addition to above, he has presented several papers on Longwall Mining, High Speed Roadway Drivage, Dust control in UG Mines and Modern Roof Bolting Techniques in National and International Forum. He is presently Hon. General Secretary of ISM Alumni Association Kolkata Chapter mainly connected with dissipation of knowledge on Earth Science and Technology.