Supremacist draws 40-year jail sentence PHOENIX, May 23 (UPI) -- A federal judge in Arizona has handed a 40-year jail sentence to a white supremacist for a 2004 bombing that seriously injured a black diversity director. Dennis Mahon, 61, was found guilty in February of conspiring to use explosives to damage buildings and property and distribution of information related to explosives, The Arizona Republic, Phoenix reported. Dan Logan, who was diversity director of Scottsdale, Ariz., in 2004, was badly injured when a pipe bomb delivered to his office exploded in his hands. Two other Scottsdale city employees were also injured. During the trial, prosecutors said Mahon and his twin brother, Daniel, carried out the bombing on behalf of the White Aryan Resistance, an organization that encourages members to commit acts of violence against non-whites. Mahon maintained his innocence in federal court moments before he was sentenced by U.S. District Judge David Campbell. His twin brother was found not guilty of a single count of conspiracy to damage buildings and property.