MUMBAI, April 27 -- To generate higher revenues, the Maha Mumbai Metro Operation Corporation Limited (MMMOCL) plans to commercialise 73,000 sq feet spread across 30 metro stations on Lines 2A and 7, including the pillars of these elevated metro corridors, that might otherwise be encroached by banners and posters. This is part of their plans to explore non-fare box revenue, earnings not tied to tickets,...