The PG&E criminal trial on federal charges for its alleged role in causing a fatal natural gas explosion in San Bruno will start one year from now -- which would be more than five years after the lethal blast, it was disclosed at a court hearing in San Francisco Monday. The trial will begin on March 8, 2016, U.S. District Court Judge Thelton Henderson stated Monday during a conference with the U.S. prosecutors and the defense attorney for PG&E.