Partha Sarathi Bhattacharyya

Part of Deepak Fertilisers & Petrochemicals Corp. Ltd., Mahadhan Agritech Ltd. is a private company that specializes in the production of high quality technical grade ammonium nitrate. The company is based in Baroda, India. The company was founded in 1987. The Indian company is the only producer of explosive grade high density and low density ammonium nitrate. The company is also a leading manufacturer of NPK and specialty fertilizers. Mahadhan Agritech was acquired by Deepak Fertilisers & Petrochemicals Corp. Ltd. on October 24, 2003.

Haldia Petrochemicals Ltd. manufactures petrochemicals, polypropylene and related chemicals. It offers polyethylene and polypropylene grades, motor-spirit, LPG, pyrolysis gasoline, CBFS/fuel oil, benzene, butadiene, and cyclo-pentane. The company was founded in 1985 and is headquartered in Kolkata, India.

Karam Chand Thapar & Bros (Coal Sales) Ltd. provides coal handling agency services. The private company is based in Kolkata, India.

Bharat Coking Coal Ltd. manages and operates coal mines. It products include coking, semi low volatile, non coking coal, hard coke, coal tar and smokeless fuel. The firm also offers washery slurry and rejects for brick kilns. It serves steel, fertilizer, cement, power plants, defense, cookery units and locomotive industries. The company was founded in 1972 and is headquartered in Dhanbad, India.

Peerless General Finance & Investment Co. Ltd. operates support vessels for subsea engineering services, deepsea diving, rescue operations and related activities. The company is headquartered in Kolkata, India.

Part of Deepak Fertilisers & Petrochemicals Corp. Ltd., Performance Chemiserve Pvt Ltd. is a private company that engages in packaging services. The company is based in Pune, India. Performance Chemiserve was founded in 2006.

Central Institute of Mining & Fuel Research provides R&D inputs for the coal-energy chain encompassing exploration, mining and utilization. It also strives to develop mineral based industries. The company was founded in 1946 and is headquartered in Dhanbad, India.