U.S. meat and poultry employers put [meatpacking] workers at predictable risk of serious physical injury even though the means to avoid such injury are known and feasible. In doing so, they violate the right of workers to a safe place of employment...[Job] safety enforcement officials do not even have data "to assess the appropriate speed at which the lines should operate"...because companies refuse to let government regulators or independent researchers measure line speed, examine workers' knife-cutting motions or study musculoskeletal injuries from repeated hard cutting. [refers to Smithfield Foods]