Show MACHINIST UM ON TRIAl AS BOMB MURDERER I Scraps in His Room Said to toBe Be Bc e Same SaIne as 11 Metal Used t in Ui Bomb Exploded San Sari Francisco Sept 1 Warren l Warren K K Billings a n. machinist charged with planting the suitcase bomb which caused the death of ot ten persons nuJ Injuries to torl forty moro on Preparedness Pre Pre- da day hero July 22 22 went on trial tolla today for his life The twelfth Juryman was chosen choson early In tho the days day's session Assistant District Attorney James F. F Brennan in his hla address to tho the Jury said Bald ho expected ho expected to prove that the tho metal pieces used In construction of ot the bomb wore Identical with metal scraps found in th Billings Billings' room at tho the time athis of at his arrest a n. low few days after the tho tragedy Superior Judge J. J Frank rank II H. Dunne Duane presiding pro pro- siding Elding at nt tho the trial ruled that metal parts could bo be Introduced for tor ide identification cation but not as evidence Tho The afternoon afternoon after after- noon session was devoted to this phase of or the case Four other persons Including one are aro under tinder indictments In connection connection con con- with tho the bomb plot and will bo be tried separately |