Substance Use Services A major service found within HRA is the Wilbur D. Mills Center in Searcy which provides a wide array of services for those impacted by Substance Use Disorder. The extensive campus includes a mental health clinic, a 20-bed medical detox unit, a 44-bed residential treatment facility, a 14-bed group home, 99 housing units, and the Kay Goss Women's Unit which consists of 14 ....