The annual Operation T-Bone cattle sale was held Tuesday at the Anita Livestock Auction as 337 head of fat cattle changed hands.  Anita Livestock owner Bernard Vais said the market was good with prices ranging from $110 to $113.50 per hundred.  Anderson Farms of Audubon sold 42 head averaging 1333 pounds for the top price of $113.50 per hundred and Bill McGuire of Audubon sold seven head averaging 1389 pounds at that top price.  Nebraska Beef, Tyson, Cargill and National Beef were the buyers.  Operation T-Bone is an annual event started in 1951 focusing on the importance of the beef industry to Audubon county.