Conflicting testimony, surveillance video topple claim for benefits

A worker on a rig alleged that drill pipe elevators pinned his knee against a chain guard and that he injured his back when he tried to push the elevators off his knee. He told different versions of the accident. He said he was pinned for a few seconds or as long as three minutes. Initially, he claimed that he felt burning in his leg from hip to toe. Later, he said he immediately went numb from the waist down. He continued to work after the alleged incident and...