The crew of the Tillotson Con struction Company of Omaha, con tractors for the new Farmer's Co operative Co. elevator here, began this week tearing down the last of the two old elevators of the coop erative in their progress of clear ing the site for the new structure. According to Dean Essex, foreman in charge of the project, another week will be required to clear the site after which work will start on the foundation for the new eleva tor.