Tuesday, Sept. 29—Jeff and Alissa Mumm of Platteville, a daughter, Hailey Susan Mumm, 9 pounds 2 ounces, 20.75 inches long, born at 2:48 p.m. at Southwest Health in Platteville. She joins a sister, Sandra, 2. Grandparents are Curt and Terry Myers of Hurley, and Gary and Sue Mumm of Lancaster. Great-grandparent is Germaine Mumm of Lancaster.