COOKEVILLE, TN-Integrator and specialty machine builder ATC Automation recently expanded its operations here with a 72,000-square-foot facility focused solely on clean assembly. An open house held May 16-18 to celebrate the event drew nearly 700 people, including employees and their families, local chamber members, end-user customers and supplier representatives. Visitors were able to view more than 25 robots performing their routines, as well as special machine assembly operations.