(mining Division) Industry House, 18th Floor, 10, Camac Street,, Kolkata - 700017, West Bengal, India
47/1g, Hazra Road, Ground Floor, Near Bank Of Baroda, Hazra Road Branch,, Kolkata - 700019, West Bengal, India
2 No, Oswal Chamber, 5th Floor, Church Lane,, Kolkata - 700001, West Bengal, India
5b, Nandalal Bose Sarani, Kolkata - 700016, West Bengal, India
Cb-57, Salt Lake City, Sector-1,, Kolkata - 700064, West Bengal, India