Show black hand assassins threaten to slow blow up powder magazine new york in a letter signed black hand and addressed to com coin mander Brauns rueter in charge of tho the united states naval magazine at lona iona island the threat has been made that the enormous stores ot of smokeless powder on the island will be blown up unless the married men discharged from employment on the island january t 1908 bo be put back to work at once there are three million pounds of smokeless powder and other eipl explosives a stored in the numerous magazines |