According to a 2010 investigation by the United States Department of Justice, many of the employees and prisoners were exposed to toxic metals from not being sufficiently trained nor were given the resources to handle toxic material. Injury and illness as a result were not reported to appropriate authorities. When investigated, they found that UNICOR, a prison labor program for inmates within the Federal Bureau of Prisons, had attempted to conceal evidence of working conditions from inspectors by cleaning up the production lines before they arrived.