Dow plunges 1,600 points at lows, marks worst intraday point drop in history, on computer-driven selling

Dow plunges 1,600 points at lows, marks worst intraday point drop in history, on computer-driven selling By MARK DECAMBRE   The Dow Jones Industrial Average fell nearly 1,600 points at its lows on Monday, after a period of selling accelerated sharply heading into the close of the session. Amplifying the slump was computer-programmed trade set to…