On the afternoon of April 27th, rangers received a report of an accident that had taken place at the new visitor center construction site. A truck that had been pumping concrete at the site using a retractable boom had shifted to one side when one of its outrigger stabilizers broke through a support beam and the boom suddenly dropped down and struck two workers who were busy spreading the concrete. Rangers Jonathon Bledsoe and Kelly Brownson responded to the call and began initial treatment of the victims, scene size-up, and evacuation plans. Additional assistance was provided by many members of the park’s interpretive staff who helped in treating the injured workers and transporting them out of the accident scene. One was transported by ambulance by Edmonson County EMS; the other appeared to have suffered more serious injuries and was flown to Vanderbilt Hospital in Nashville by an Air Evac helicopter. The worksite was immediately shutdown and secured until an investigation into the accident could be completed. Both workers were released from the hospital the next day with assorted cuts and bruises but no serious injuries.