Rockhound Finds WWII Bomb in Utah Desert He was disappointed when the Air Force blew it up By Michael Harthorne, Newser Staff Posted Oct 15, 2015 4:02 PM CDT 13 comments Comments A World War II-era training bomb discovered by Craig Alvord is strapped with explosives before it was blown up the US Air Force on Tuesday. (Marc Weaver, KSL-TV/Deseret News via AP) (Newser) – Ex-Marine Craig Alvord calls it a "once-in-a-lifetime" find after more than 50 years of rockhounding: a 500-pound unexploded WWII-era bomb. According to the Desert News, Alvord found the 6-foot-long bomb while hunting rocks in Utah's West Desert Monday. He tells KSL he was nervous finding the bomb, so he reburied it and contacted the US Air Force. According to the News, the Air Force used six pounds of C4 to blow up the old bomb, which had been used for training. Alvord says he was disappointed his find had to be destroyed, but at least the explosion was neat. "There was a pretty good puff of smoke, probably about 50 feet high," Alvord tells the News. And he's got no regrets. "It's been thrilling," he says. "The day I found it, I was having a really good day."