TV AND WEB RESTRICTIONS~**DIGITAL USE ONLY, NO BROADCAST USE WORLDWIDE, NO ACCESS AUSTRALIA BROADCASTER WEBSITES. NO ACCESS JAPAN. NO ACCESS ABC AMERICA, FOX, UNIVISION, TELEMUNDO, BBC AMERICA, NBC, OR THEIR DIGITALMOBILE PLATFORMS. NO ACCESS LOS ANGELES, CALIFORNIA MEDIA MARKET WEBSITES**br br ROUGH CUT (NO REPORTER NARRATION)br br Virgin Galactic founder Richard Branson said on Saturday (November 1) he was working with U.S. authorities to determine what caused a passenger spaceship being developed by his space tourism company to crash in California, killing one pilot and injuring the other.br br Branson arrived in California to meet Virgin Galactic employees and officials from the National Transportation Safety Board, which he said would handle all work and official comment on the investigation.