by Saleem Shahid in Dawn, August 16th, 2023QUETTA: An under-construction railway line, linking Harnai with Sibi, was blown up by unknown militants on Tuesday, according to officials. Last week, Pakistan Railway restarted passenger and goods trains after 17 years between Sibi and Harnai after laying down a new track and constructing railway bridges. All railway tracks and bridges were destroyed by the militants due to which train services remained suspended for years. While confirming the…