Use of clean fuel is mandatory within 30 sq km of Victoria Memorial The state pollution control board and police will soon launch a drive to identify hotels, restaurants and other establishments violating a high court order banning the use of coal for cooking within 3 km of Victoria Memorial Hall. Violators may attract closures, fines and even FIRs. The decision to launch the joint drive was taken at a recent meeting between environment department officials and Calcutta police top brass at Lalbazar.