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On the night of 17th July 1944, two transport vessels loading ammunition at the Port Chicago (California) naval base on the Sacramento River were sud. denly engulfed in a gigantic explosion. The incredible blast wrecked the naval base and heavily damaged the small town of Port Chicago, located 1.5 miles away. Some 320 Ame,.ican naval personnel were killed instantly. The two ships and the large loading pier were totally annihilated. Several hundred people were injured, and millions of dollars in property damage was caused by the huge blast. Windows were shattered in towns 20 miles away, and the glare ofthe explosion could be seen in San Francisco, some 35 miles away. It was the worst home-front disaster of World War 11. Officially, the world's [rrst atomic ,test explosion occurred on 16th July 1945 at Alamogordo, New Mexico; but the Port Chicago blast may well have been the world's first atomic detonation, whether accidental or not. THE SHIP The E. A. Bryan, the ship which exploded at Port Chicago, was a 7,212-ton EC-2 LilYert):' snip commanded by Captain John L. M. HendJicks of San Pedro, California, and operated by Oliver J. Qlson & Co., San Francisco. It was Ibuilt and launched at the Kaiser Steel shipyard in, Richmond, California, ,in March 1944. She made a maiden voyage to the South Pacific and then was-ordered into the US Navy's AlalTIeda Shipyards where the five-ton (W,ClOO-pound maximum load) booms and gear on the no. I and no. 5 hold..s were removed and repl'aced with 10-ton booms and gear. It then docked at Port Chicago on 13th July 1944. At 8.00 am on 14th July, naval personnel began loading ammunition. The E. A. Bryan had been moored at Port Chicago for four days, taking on ammunition and explo.sives night and day. Some 98 men of Division Three were hard at work 10adiIlg the Bryan, and by 10.00 pm on 17th July the ship was loaded with some 4,600 tons of munitions including 1,780 tons of high explosives. The second ship, the Quinalt Victory, was b(and new; it was preparing for its maiden voyage. The Quirwlt Victory had moored at Port Chicago at about 6.00 pm on the evening of 17th July. Some 102 men of the Sixth Division, many of whom had only recently arrived at Port Chicago, were busy rigging the ship in preparation for 10ading of ammunition which was due to begin by mjdnight. In addition .to the enlisted men present, there were nine Navy officers, 67 members of the crews of the two ships along with an Armed Guard detail of 29 men, five crew mem bers of a Coast Guard fire Ibarge, a Marine sentry and a number of civilian employees. The pier was congested with men, equipment, a locomotive, 16 railroad boxcars, and about 430 tons of bombs and projectifes waiting to be loaded. Mosb of the enlisted men, upon first arriving at Port Chicago, were quite fearful of the explosives they were expected to handle. But, over time, many of the men simply accom modated themselves to the work situation by discounting the risk of an explosion. Most men readily accepted the omcees' assurances th.at the bombs could not explode because they had no detonators. THE EXPLOSION Just before 10.20 pm, a massive explosion occurred at the pier. To some observers it appeared that two explosions, only a few seconds apart, occurred: a first and smaller 'blast was felt; this was followed quickly by a cataclysmic explosion as the E. A. Bryan went off like one gigantic b'omb, sending a column of fire and! smoke more than 12,000 feet into the night sky. JUNE-JULY 1996 NEXUS • 11