<prompt> Second injury is an explosion is due to -Due to flying debrisDue to blast windDue to shock waveDue to complication  <response>: The synopsis of forensic medicine toxicology ;Dr k.s narayan reddy ; 28th edition ;pg.no. 138 The blast may drive multiple fragments of bomb or pieces of nearby objects, e.g gravel ,glass,wood,brick,plaster etc through the air into the skin causes bruises ,abrasion, puncture lacerations intimately mixed on skin . 