Joined Central Mine Planning & Design Institute (a subsidiary of Coal India Limited) on 23rd March 1982 as Executive Trainee.

• From 1983-86 worked as Design Engineer in CMPDI.
• From 1986-89 worked as Executive Engineer in CMPDI.
• From 1989-93 worked as Senior Executive Engineer in CMPDI.
• From 1993-2000 worked as Superintendent Engineer in CMPDI.
• From 2001-07 worked as Deputy Chief Engineer in CMPDI.

Joined academics in Birla Institute of Technology, Mesra, in 2007 as Reader.

• Associate Professor, from 2010 onwards.

• Open-pit Mining,
• Highwall Stability,
• Waste dump Stability,
• Fracture  and Rock Mechanics,
• Mitigation and prevention of landslides in Coal & Lignite Mine,
• Design of  Safe.and economical profile of dragline and shovel-dumper dump.

• Selected to impart internship to a GERMAN student in DAAD Rise Fellowship, 2019.
• Awarded Hindustan Zinc limited award by Institution of Engineers (India) for consecutive two years.

Invited  Lectures

• Invited lecture to 'Disaster Prevention Research Institute' of  Kyoto University, Japan in (2019)
• Missouri University of Science  & Technology, Rolla, USA  to deliver a lecture on problems & solutions of slope stability of coal & lignite mines of India (2015).
• Office of the  Surface Mining Reclamation & Enforcement, USA to deliver a lecture on the methodology of tackling mine slope stability problems of India (2012).
• Northern Coalfields Limited,  (2008 -  2016).
• Western Coalfields Limited, (2009 -  2013).
• Indian Institute of Coal Management (IICM) (2005 – 2016).

Contribution to the Mining  industry  of India

• Requested by Coal India as a member of a high-powered inquiry committee to investigate the cause and mitigation of fatal (5 persons) dragline dump failure of Jayant opencast mine, Northern Coalfield Limited.  
• Requested by Coal India to investigate the cause and mitigation of fatal (2 persons) dragline dump failure of Sasti opencast mine, Western Coalfield Limited.
• Requested by Coal India to investigate the cause and mitigation of fatal (1 person) dragline dump failure of   Umrer opencast mine, Western Coalfield Limited.
• Requested by Coal India to investigate the cause and mitigation of fatal (23 persons) dump and high wall failure of Rajmahal (Lalmatia) opencast coal mine, Eastern coalfield Limited
• Requested by South  Eastern Coalfield to predict occurrence of Mining landslide which saved more than 10 human lives.

International Journals

1. Roy I, Sharma S and Shrivastava A K (2013) “Development of Guidelines for Safe Dragline Dump Profile under Geo-Engineering Conditions of Coal Mines in Coal India”. International Journal of Computer Science & Management Studies, Vol. 13, Issue 02, May 2013.  ISSN (Online): 2231 –5268.
2. Verma M, Sahoo U C and Roy I (2013) “Mechanistic Design of Haul Road Pavements for Opencast Mines.” International Journal of Civil Engineering and Applications. ISSN no. 2249-426X, Volume 3, November 3 (2013).
3. Sengupta S, Sharma S and Roy I (2014); “Investigation of Shear Strength Parameters of Highwall Rock Slopes and Overburden Dump Mass in Opencast Coal Mines”;International Journal of Engineering, Management, Humanities and Social Sciences Paradigms (IJEMHS); (Vol. 07, Issue 01, June 2014); ISSN: 2347 - 601X.
4. Sengupta S and Roy I (2015); “Study of Internal Dump Stability of Dudhichua Open Cast Project, Northern Coalfields Limited, India ”; Journal of Institute of Engineers – Series D (Springer Series); ISSN 2250-2122; J. Inst. Eng. India Ser. D DOI 10.1007/s40033-014-0061-5.
5. Sharma S and Roy I(2015); “ Slope Failure of Waste Rock Dump at Jayant opencast Mines, India – A Case Study”; International Journal of Applied Engineering Research (IJAER), Research India Publication, Vol. 10, No. 13 (June 2015), ISSN: 09732-4562, pp – 33006-33012 (indexed in SCOPUS).
6. Sharma S, Sengupta S and Roy I (2015); “Identification of Failure Surfaces in Dragline Dumps of Open Cast Mines” (Communicated to ARPN, Journal of Earth Science, ISSN: 2305-493X (indexed in SCOPUS).
7. Sengupta S, Sharma S and Roy I., (2016); “Stability analysis of overburden internal dump material of Amlohri opencast coal mine, India”; ARPN Journal of Earth Sciences (Asian Research Publishing Network), Vol. 5, No. 1, June 2016; ISSN: 2305-493X (indexed in SCOPUS).
8. Sengupta S, Krishna A P and Roy I., (2018); Slope failure susceptibility zonation using integrated remote sensing and GIS techniques: A case study over Jhingurdah open pit coal mine, Singrauli coalfield, India, Journal of Earth System Science 127(6), DOI: 10.1007/s12040-018-0982-8 (indexed in SCI).

National  Journals:

1. Roy I (2008); “Minimizing Land Requirement for External Dumping with the Use of Fly Ash – A Case Study”; National Seminar on Environmental  Issues on Geo-technics and Mineral Industry, Sponsored by TEQIP March 2008.
2. Roy I (2008); “Increase in the Safe Angle of External Dump with the Application of Fly Ash in Sonepur-Bazari Opencast Project, India”; Minetech, Volume 29, CMPDI, December 2008, ISSN: 0970-7204.
3. Dutta S, Rohela P and Roy I (2008); “Increasing the Safe Angle of External Dump with the Application of Fly Ash in Sonepur-Bazari Opencast Project, India”. Minetech, Volume 29, Central Mine Planning & Design Institute Ltd. India; pp: 33-36.
4. Roy I and Sengupta S (2013); “A Study on Dump Slope Stability of Dragline Operated Opencast Mines of Coal India”; National Seminar on Dragline Mining: Prospects and Challenges, 6-8^th December 2013.
5. Sengupta S and Roy I (2015); “Sustainable Development of Indian Coal Industry – Slope Stability Challenges”; Development and Conflicts, Published by Nirmala College, Ranchi in Association with University Grants Commission, Eastern Region Office, Kolkata; ISBN: 978-93-80036-75-5.
6. Verma Meeta, Roy I & Sahoo U.C (2020) Design of Haul Roads in Open Cast Mines in India—A Mechanistic Design Approach"  Journal of The Institution of Engineers (India): Series D. (indexed in SCOPUS)

International Conferences

1. Roy I (2008); “Maintaining Safety Standards of Dragline Dumps of Jayant OCP -  A Success Story”; 2nd Asian Mining Congress,  MGMI, India   January 2008; ISSN: 978-81-8211-069-4.
2. Roy I (2008); “Slope Stability Study of External Dump of Sonepur-Bazari Opencast Coal Mine, India – A Case Study”; Case Histories in Geotechnical engineering, Arlington, Virginia, USA, August 2008.
3. Roy I (2009); “Slope Design  Criteria at Quarry batter of Niljai Opencast coal mine of WCL”; International Symposium on Rock-Mechanics and Geo-environment in Mining and Allied Industries at BHU-IT, Varanasi  Mar 2009.
4. Roy I (2009); “Problems of Handling Mining and Power Plant Solid Waste with its Solution in India”; International Conference on Solid Waste Management at Khulna, Bangladesh, September 2009; ISSN: 9789843307613.
5. Roy I (2010); “Design of an External Waste Rock Dump in an Opencast Coal Mine Standing Against a Hill in Seismic Prone Area of India”; 5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics and Symposium in Honour of Prof. I.M Idriss”; May 24-29, 2010, San Diego, California.
6. Roy I (2011); “Stability of Dragline Waste Rock Dump in an Indian Opencast Coal Mine”; 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. May 23-27, 2011, Hong Kong; ISSN: 9781627483834.  
7. Das N, Roy I and Kumar M (2012); “Success Story of Jayant Opencast Mine in Maintaining Safe Dragline Dump Profile”; 4th Asian Mining Congress, MGMI, India, January 2012; ISSN: 978-81-8211-069-4.
8. Roy I, Sengupta S and Das N (2012); “Investigation and Mitigation of Structural Failures in Jhingurdah Opencast Mine: A Case Study”; 4th Asian Mining Congress, 2012; The Mining, Geological and Metallurgical Institute of India.
9. Roy I, Vyas D, Sengupta S (2014); “A Solution to Dump Slope Stability Problems of Tadkeshwar Lignite Opencast Mine”; 5th Asian Mining Congress, 2014; The Mining, Geological and Metallurgical Institute of India.
10. Roy I, Gokhale D, Rogers David (2016) " A possible solution to the stability problem of internal dump over steeply inclined mine floor, 6th Asian Mining Congress, 2016; The Mining, Geological and Metallurgical Institute of India.
11. Roy I, Roy A Dutta S (2017), " Prediction of safe and economic slope angles of external dump of Western Coalfields Limited, 7th Asian Mining Congress, 2017; The Mining, Geological and Metallurgical Institute of India.

 National Conference

1. Roy I (2008); “Minimizing Land Requirement for External Dumping with the Use of Fly Ash – A Case Study”; National Seminar on Environmental  Issues on Geo-technics and Mineral Industry, Sponsored by TEQIP March 2008.
2. Roy I (2008); “Increase in the Safe Angle of External Dump with the Application of Fly Ash in Sonepur-Bazari Opencast Project, India”; Minetech, Volume 29, CMPDI, December 2008, ISSN: 0970-7204.
3. Dutta S, Rohela P and Roy I (2008); “Increasing the Safe Angle of External Dump with the Application of Fly Ash in Sonepur-Bazari Opencast Project, India”. Minetech, Volume 29, Central Mine Planning & Design Institute Ltd. India; pp: 33-36.
4. Roy I and Sengupta S (2013); “A Study on Dump Slope Stability of Dragline Operated Opencast Mines of Coal India”; National Seminar on Dragline Mining: Prospects and Challenges, 6-8th December 2013.
5. Sengupta S and Roy I (2015); “Sustainable Development of Indian Coal Industry – Slope Stability Challenges”; Development and Conflicts, Published by Nirmala College, Ranchi in Association with University Grants Commission, Eastern Region Office, Kolkata; ISBN: 978-93-80036-75-5.
6. Sengupta S and Roy I., (2017); “Stability analysis of high-wall slope with presence of competent and incompetent rock strata – A case study”; National Conference on Construction Management, Mechanization and Environmental Sustainability (CMMES 2017), 21 – 22nd, 2017, Birla Institute of Technology, Mesra, Ranchi, India.

Workshop organized and delivered a lecture on two session - Two days workshop on "Mine Slope Stability and Mine Environment Safety (March 21-22, 2018)

• Mining Geological and Metallurgical Institute of India. 
• Institution of Engineers (India).

Completed  R&D Projects (last 11 years) as PI:-

• Development of guidelines to predict optimum distance between dragline  & Shovel-dumper dump. - CIL R&D grant - 27 lakhs. (Rated excellent  by Ministry of Coal). [In  both cases, it was  implemented  by Coal India]
• Development of guidelines for dragline dump profile- CIL R&D grant - 59 lakhs. (Rated excellent  by Ministry of Coal)

On-going R&D Projects as PI:-

• Development of guidelines for design of all tiers of shovel-dumper dump above dragline dump, with delineation of phreatic surface, within dragline dump, throughout the year and validation study on two dragline mines of Coal India Limited (CIL) - CIL R&D grant - 75.30 lakhs.
• [Rock Mechanics laboratory was developed with the above  R&D  project].

Completed Consultancy Project (last 11 years) as PI:-

• Slope stability Study of Coal Mines: Kolgaon Gondegaon,Ukni, Sasti, Chinda, Umrer, Mungoli,  Neeljai, Penganga, Ballarpur, Naigaon, Junad, Ghonsa, Gokul, Durgapur, Kolarpimpri Pauini, Makardhokra & Gauri deep, New Sethia, Urdhan  (WCL Maharastra),
• Jhingurdah, Bina, Dudhichua, Khadia  (NCL Singrauli),  Manikpur, Gevra, Kusmunda, Dipka, Baroud(SECL) 
• Bhurkunda & Tapin (CCL),
• Fly-ash (CMPDI),
• Parsa (Adani mine),
• Tikak (NEC-Assam),
• Mines  of  Essar-Hindalco, Visa-power, Lanco, ACMM, KSK energy, Tata Steel
• Barjora, Gangaram chak, TransDamodor, Barjora N ( WBPDCL).
• Slope stability Study of Lignite Mines: Tadkeswar & Surkha(GMDC-Gujrat), Vastan & Valia (GIPCL Gujarat), Panandhro, Ghogha-Surkha, Panandhro, Mata-no-Madh, Umarsar. (GMDC-Gujarat)

On-going Consultancy Project as PI:-

• Slope stability Study of Coal Mines: 15 nos of Opencast Mines.

1. Handbook for practicing Mining Engineers titled "A HANDBOOK  ON  DRAGLINE  DUMP  PROFILES OF SURFACE  COAL MINES  OF INDIA."
2. A chapter on Slope Stability in the book "Coal Mining and Management Vol - III". (Chapter 5)