The tomb of the man labeled by history as Huey P. Long's assassin was opened in Baton Rouge as a forensics sleuth hoped to settle questions about the death of the Louisiana political legend. Workers carefully scraped away 19 inches of hard dirt on top of the vault of Dr. Carl Austin Weiss, who died in a hail of bullets along with Long in 1935. If historic accounts are correct, Weiss shot the "Kingfish" as he strolled down a state Capitol corridor, then was killed by Long's bodyguards. But questions have arisen on whether Long was fatally wounded by his overeager bodyguards. A scientist said an examination of Weiss' remains could shed light on the dispute.