A former Australian transport minister challenged oil tanker owners, who were meeting in Sydney on Tuesday, to join him in the fight against "slave-ships", which still thrive in the world's shipping trades. At the end of a vigorous debate on corrosion in tankers, Peter Morris challenged the industry to take more interest in its human resources. "You've all been worrying about the rates of corrosion of metal, but what about the corrosion of lives?" he asked. "I think you and I are going to be working very closely in the future," he told Intertanko chairman Westye Hoegh. Morris, transport minister from 1983 to 1987 in Bob Hawke's Labor government…