(New Paris, OH)--The search and recovery efforts for a missing man at a Preble County lake were unsuccessful on Tuesday, but the search will continue until that person is located.  Numerous agencies have been involved in the search.  Sheriff Mike Simpson said that it will be difficult to keep all the agencies there to keep up the search on a continuous basis.  Law enforcement agents are indicating Wednesday morning that the search is ongoing and will not end until a recovery is made.