Dynamite Defendants Leave Federal Building, Indianapolis

The investigation of the Los Angeles Times bombing led to the trial of 45 union men, mostly from the International Association of Bridge and Structural Iron Workers (IABSIW), for a nationwide dynamite sabotage campaign. They were charged with transporting dynamite and nitroglycerin aboard passenger trains engaged in interstate commerce and with conspiracy "to commit an offense against the United States." The trial, which began in October 1912, was considered the largest criminal conspiracy trial in American history up to that time and consisted of 499 witnesses for the prosecution, 188 witnesses for the defense, five thousand pages of documentary exhibits, and twenty-one thousand pages of testimony. Library of Congress Prints and Photographs Division, LC-DIG-ggbain-11740