A group of Kwai Tsing district councillors yesterday tried in vain to block the transport of the last batch of contaminated mud for burning at a plant on Tsing Yi. About 25 tonnes of dioxin-tainted mud were moved by a contractor from To Kau Wan on Lantau to the Tsing Yi Chemical Treatment Centre after 1am yesterday, finishing a five-month operation to burn the waste. Yesterday's operation was met by 11 angry district councillors at the access road to the plant. They accused officials of disrespecting the community by ramming through the last batch of mud for disposal. They tried to intercept the convoy of trucks in the middle of the road but were taken by police to a designated petition area. One protester, democrat councillor Angel Wong Suet-ying, stood inside a box of soil up to her chest, symbolising the burial of public opinion. She said they were dissatisfied with officials who had shortened the transport schedule by two weeks and increased the volume of mud taken in. It will take about one week to burn the mud - a few days longer than the time before, she said. 'Are they really in a hurry to shorten the schedule and burn the toxic waste as quickly as possible without properly discussing with the council,' she asked. 'The officials have obviously made a politically unwise decision.' Councillors did not protest against the previous shipment in February because they did not want to waste police manpower. But Ms Wong said they felt they had been fooled by officials that time and decided to take action now. The dioxin-contaminated mud was dredged from a former shipyard during the construction of Disneyland.