FILE - In this March 29, 2012 file photo, the beef product known as pink slime or lean finely textured beef is frozen on a large drum as part of its manufacturing process at the Beef Pr

 

              FILE - In this March 29, 2012 file photo, the beef product known as pink slime or lean finely textured beef is frozen on a large drum as part of its manufacturing process at the Beef Pr
FILE - In this March 29, 2012 file photo, the beef product known as pink slime or lean finely textured beef is frozen on a large drum as part of its manufacturing process at the Beef Products Inc.'s plant in South Sioux City, Neb. Beef Products Inc. plans to file a defamation lawsuit in the wake of a publicity storm over a meat product that critics have dubbed "pink slime." The Dakota Dunes, S.D.-based company said Wednesday, Sept. 12, 2012 that it will announce a lawsuit Thursday. A company executive and lawyer refused to name the defendant. (AP Photo/Nati Harnik, File)