Theiss-Dowell JV wins rail extension contract in Australia October 22, 2010 | Asia Pacific News A joint venture (JV) of Australia-based construction firms Theiss and McConnell Dowell has won a contract to build a 5.7-km railway extension to Seaford in south Adelaide, Australia. The JV will begin... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password