The Iowa attorney general's office says investigators have executed a search warrant at the Agriprocessors Inc. plant in Postville, which was the site of a huge Immigration raid in May... Agriprocessors spokesman Chaim Abrahams said..."As it has done in the past, the company cooperated completely...As the Attorney General's press release stated, no charges have been filed and the company, like everyone else in America, is to be 'presumed innocent until and unless proven guilty."' Earlier this month, the Iowa Labor Commissioner's Office said an investigation which spanned several months uncovered 57 cases of child labor law violations at the plant. State officials said the types of alleged violations included minors working with prohibited tools, working in prohibited occupations, exceeding allowable hours for youth to work, failure to obtain work permits and exposure to hazardous chemicals.