FILE - This March 29, 2012, file photo, shows the beef product that critics call "pink slime" during a plant tour of Beef Products Inc. in South Sioux City, Neb. An attorney for BPI on Tuesday, April

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FILE - This March 29, 2012, file photo, shows the beef product that critics call "pink slime" during a plant tour of Beef Products Inc. in South Sioux City, Neb. An attorney for BPI on Tuesday, April 9, 2013, praised an Iowa judge's ruling that blocked the release of documents on food safety testing conducted for the Sioux Falls, S.D.-based company. Judge Dale Ruigh ruled last month that releasing the information would cause "irreparable harm" to BPI by revealing information about proprietary food-processing techniques. (AP Photo/Nati Harnik, File) less 

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Associated Press
Wed, Apr 10, 2013 9:06 PM EDT