Commonest organ to be injured in primary blast injuries is:
Lung is the most common organ damaged in an air blast injury. Ref: Disasters and Public Health By Clements, 2009, Pages 66-67; The Essentials of Forensic Medicine and Toxicology By Dr K S Narayan Reddy, 27th Edition, Pages 210-11 and 28th Edition, Page 211
Lung
Liver
Spleen
Skin