QRail awards contract for elevated section of Doha Metro Green Line August 25, 2014 | Middle East & Africa Company News Qatar Railways Company (QRail) has awarded a construction contract for the elevated section of the Green Line of the Doha Metro to the joint venture (JV) of Austria-based PORR, Saudi Arabia-based Binl... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password