Photo - In this Wednesday, July 2, 2014 photo, smoke billows out of a chiming chimney stack of a steel works factories in Port Kembla 86 kilometers (53 miles) south of Sydney. The Senate is expected to vote as early as Monday, July 7, 2014, to repeal an unpopular, two-year-old tax charged to around 300 of the country's biggest carbon polluters. (AP Photo/Rob Griffith)