PVC also doesn't show up well on x-rays either. A student at our high school had a potato cannon explode next to his hip one year. He ended up with a trip to th

PVC also doesn't show up well on x-rays either. A student at our high school had a potato cannon explode next to his hip one year. He ended up with a trip to the emergency room where the radiology tech shared that nugget of wisdom with him. Fortunately, when PVC fractures, most of the pieces remain large, so he was mostly bruised, but he had a couple of nasty cuts. In this case, however: > Fortunately, everyone was safely behind a barrier a safe distance away, and no one was hurt. It sounds like this particular experiment was conducted by people with enough sense to stay out of harms way.