Al-Mabani General Contractors and Al-Arrab Contracting secure HHR contract May 11, 2012 | Middle East & Africa Company News A joint venture of the Al-Mabani General Contractors and Al-Arrab Contracting has secured a contract for the Haramain high-speed railway (HHR) project, Saudi Arabia. The work involves construction of... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password