The 51st annual Minnesota Inventors Congress, held June 14 in Redwood Falls, Minn., recognized three Carlton County residents.
Robert Adamczak of Moose Lake was given a bronze medallion for his ladder buddy tray, which mounts to the side rail on most ladders and holds many items.
Hannah Walther and AnnieKate Chromy won a Kid's Choice Award for Mathtopia, a dice game they invented that requires players to complete math equations and move across a game board.