(mining Division) Industry House, 18th Floor, 10, Camac Street,, Kolkata - 700017, West Bengal, India
22/1, Rai Bahadur Road,, Kolkata - 700034, West Bengal, India
Plot A 50, Rajganga Main Road,, Kolkata - 700107, West Bengal, India
No-1, Garstin Place, Near-shipping, Co-operation Of India,, Kolkata - 700001, West Bengal, India
Balia Middle(main) Road, Garia,, Kolkata - 700084, West Bengal, India