How many people died in the event that is memorialized at  The Port Chicago Naval Magazine National Memorial?
Port Chicago Naval Magazine National Memorial: The Port Chicago Naval Magazine National Memorial is a memorial dedicated in 1994 recognizing the dead of the Port Chicago disaster, and the critical role played by Port Chicago, California during World War II, in serving as the main facility for the Pacific Theater of Operations. Port Chicago disaster:  Munitions detonated while being loaded onto a cargo vessel bound for the Pacific Theater of Operations, killing 320 sailors and civilians and injuring 390 others.
320