The digger helping to clear Alderman Canal in Ipswich. - Credit: Greenways Project/IBC A team from Ipswich's Greenways Project had to call in a digger and other heavy equipment to clear mattresses and sofas that had been dumped in the Alderman Canal, not far from the town centre. Three old mattresses and three sofas were removed during an all-day clean-up on Thursday - but the team will still have to return in a few weeks in their boat to remove the floating rubbish. The Greenways Project is managed by Ipswich council, with support from other local authorities in the area to manage and protect nature areas in and around the town.