The Dow Jones industrial average plunged Thursday, losing 34.32 to fall to 5,182.15. The New York Stock Exchange composite index also lost ground, falling 2.07 to 329.10. On the Big Board, decliners led advancers 1,302 to 1,062. Volume was heavy with 461.94 million shares traded. The technology-heavy Nasdaq composite index also fell dramatically, losing 16.15 to end the day at 1,040.39. The Standard & Poor's 500 stocks lost 4.77 to 616.92. In London, gold closed at $385.85, off $2.00.