Ambushed Driver Witness at Probe WASHINGTON - A truck driver who survived a shot from ambush was called as a key witness today in a probe of alleged Teamsters Union goon squad violence in six states. As the Senate Rackets Committee opened a new series of hearings, counsel Robert F. Kennedy confirmed that Ray Byrd of Batavia, Ohio, has been subpoenaed. Kennedy said Byrd was called to tell how he was shot in the back in August 1956 near LaFollette, Tenn., when gunmen ambushed his truck. Police never have solved the shooting, Kennedy added. Kennedy said the committee is launching an inquiry into activities of- what he termed "a goon squad drawn from some Teamster locals in Tennessee." Much of the investigation will deal with violence in that state, Kennedy said, but it also will study reports of violence in Ohio, Kentucky, Georgia, Florida and Mississippi against truckers operating in those states. Kennedys aid other first day witnesses include J. R. Pemberton, Clinton, Tenn.,an executive of the Pemberton Truck Lines which employed Byrd, and Paul Andrews, an official of the B. & S. Motor Lines of Nashville, Tenn. Newport Dailey News, Newport, Rhode Island, Dec 5, 1957