Keystone - Daniel W. Benventano, 58, of Keystone and formally of Denver, Colorado, died at Rapid City Regional Hospital, Tueday, September 13, 2011. Survivors include his daughter and son-in-law, Julie (Ben) Mamrot, Keystone,South Dakota and a uncle, Sonny Beaver, Newell, South Dakota. Memorial Services will be 10:00 a.m. Saturday, September 17, 2011 at the Keystone United Church of Christ with Pastor Chuck Landon officiating. Inurnment will take place at a later date.