for son ini •PHOENIX (U PI) — ; unemployed miner charged_ with making a bomb that severely injured Hjs father has been bound over tor trial after a preliminary hearing:William Larry Wehb^; 20, of Tucson, was charged with illegal possession of an unregistered . explosive device,. His father, Newell S. Webb, 41, also a miner,' lost both his arms when the bomb went off as he opened a package he found in his mailbox Jan. 22.According to testimony at the preliminary hearing yesterday before U.S. Magistrate. Richard Gormley, fingerprints and handwriting samples found on the package matched. those of the suspect.