Mumbai, May 16 -- After a 120x120 feet hoarding set up near a petrol pump in Pant Nagar, Ghatkopar, collapsed unable to withstand a brief spell of dust storm on Monday, causing 14 deaths and injuring 75 others, the Brihanmumbai Municipal Corporation (BMC) set about scrutinising illegal billboards (bigger than permissible size of 40x40 feet) in the city....