Problem is the geology of rocks below the rail tracks unexpected by the Central Railway officials.
https://www.freepressjournal.in/mumbai/mumbai-central-railways-micro-tunneling-work-at-masjid-station-hits-roadblock
https://www.freepressjournal.in/mumbai/mumbai-central-railways-micro-tunneling-work-at-masjid-station-hits-roadblock
Mumbai: Central Railway’s micro tunneling work at Masjid station hits roadblock
www.freepressjournal.in