Visitors previewed the Graves County Health Department's new needle exchange program during an open house Monday, April 15. The needle exchange program opens Wednesday, April 17 at the health department, using a separate entrance on 10th Street. It will be open every Wednesday from noon to 2 p.m. See complete coverage in The Mayfield Messenger's Wednesday, April 17 edition or visit www.mayfield-messenger.com beginning that date.