A multiagency disaster drill took place Monday at the Northeast Georgia Medical Center in Gainesville. The drill simulated a railway accident that released adipic acid, a commonly transported toxic substance used in the manufacture of nylon, that resulted in the contamination of approximately 30 people. “This drill allows us to exercise response efforts and to identify the areas that we can improve upon,” said Brandin DiBlasi, training coordinator of Emergency Preparedness for the Georgia Department of Public Health.