There are still questions that investigators are looking into, but much more was revealed yesterday afternoon on the explosion from Monday night that caused a man to be airlifted to the Johnson City Medical Center. Deputies and Zionville Fire Department responded with Watauga Medics to 179 Lola Perry Road in Zionville after Kevin L. Isaacs suffered life threatening injuries in the 7pm blast. Deputies discovered that Isaacs had been disassembling old blasting caps and removing the explosive materials when something sparked the unstable chemicals and an explosion occurred, according to the release. Deputies found over 100 more live blasting caps outside at the scene which prompted deputies to contact the Wilkes County Sheriff