The beef product known as pink slime or lean finely textured beef is frozen on a large drum during a tour of the Beef Products Inc.'s plant in South Sioux City, Nebraska

The beef product known as pink slime or lean finely textured beef is frozen on a large drum during a tour of the Beef Products Inc.'s plant in South Sioux City, Nebraska March 29, 2012. REUTERS/Nati Harnik/Pool