At 10:15 pm on 17 July 1944, 320 people were vaporized in a munitions explosion while loading two ships simultaneously. The blast registered 3.4 on the Richter scale, disintegrated the docks above, blew one ship into small pieces, threw other ships hundreds of yards away, and injured people on the other side of Suisun Bay above. Most of the victims were young African Americans, and the Navy blamed the poorly trained black workers rather than the white officers in charge. When 50 survivors refused to return to work, they were sentenced to 8 to 15 years in prison and others were threatened with firing squad for mutiny. Despite the efforts of Thurgood Marshall to defend them and focus the blame on the Navy’s negligence, the ‘mutineers’ spent the rest of the war in prison, and the story was lost to history until a Cal professor named Robert Allen found a pamphlet, interviewed a dozen survivors and wrote a book in 1989.

The story is powerful, and the ranger and volunteer did an excellent job of painting a detailed picture of racism, dereliction of duty (among the officers who bet on load rates), the lies that the enlisted workers were told (that the bombs were inert), and the trial. Photographs, oral accounts and actually visiting the spot where it happened, including touring the revetments where munitions were transferred from boxcars and out to the docks, bring the impact home. The volunteer, Diana, noted that the Navy suffered an even more deadly munitions loading accident less than 4 months later, when the USS Mt Hood exploded in New Guinea on 10 November 1944, obviously not learning the lessons of Port Chicago. The ranger, Eric, made a persuasive case that the negligence and racism uncovered and protested, while officially unpunished, likely prompted the Navy to be the first branch of the military to desegregate completely in February 1946, two years before the other branches.

This park unit is dedicated to preventing this unjust tragedy from being forgotten. Tours must be reserved at least two weeks in advance for Thursday through Saturday when the Army, who took over the base, allows visitors. Although the tour met at the Muir home, I was able to drive my EV to the site above. Fortunately, the park service is working on improving access by building a visitor center nearby.