Human Rights Watch has issued a report...concluding that working conditions among the nation's meatpackers and slaughterhouses are so bad that they violate basic human rights...Officials of Nebraska Beef did not respond to telephone inquiries seeking comment about the report. But Gary Mickelson, a spokesman for Tyson, said: "We're disappointed by the report's misleading conclusions, but not surprised given the author's extensive ties to organized labor..." Dennis Treacy, Smithfield's vice president for environmental, community and government affairs, faulted the report for dealing at length with...labor law violations eight years ago... "They make no mention of the current situation of our plants or anybody else's," Mr. Treacy said.