During his era, I read or heard somewhere, Mr Suresh Prabhu suggested that the old earthworks of these MG lines be also converted into BG. Consequently, the KIR-AUB section could have been tripled & the capacity could have been augmented. Well this did not happen, now many parts of these old MG lines have been taken over by streets/OHE poles/settlement, something that can be easily observed at the outskirts of KNE or AUB