If a high-powered delegation of senior executives from Comalco or its parent company, Rio Tinto, lobbied Tasmanian government officials or ministers over a policy affecting their power-guzzling Bell Bay smelter, nothing would need to be disclosed under the provisions of the new lobbying code of conduct which was announced on Saturday.

However, if Comalco or Rio Tinto had a lobbyist from a well-connected lobbying firm try to persuade officials or ministers to their point of view on an issue, all that would be disclosed is the name of the lobbyist, the firm they work for and the name of their client. No details of what they were lobbying on, when they made representations or how much the company was spending on its lobbying effort would be made public. All that would remain secret.