It all depends on how hard the crash is and how abruptly it falls. The economic folks say there will be a brief dramatic crop in the price of precious metals as the big guys cash in their paper gold reserves to cover margin calls. That would signal a coming stock crash. Lots of stuff have to happen first such as a large rise in interest rates followed by a drop as they try to rescue the economy. Watch for large swings in the markets. October of this year is when many expect things to begin, but that has been predicted before and the Fed has managed to wiggle things around. The U.S. debt has doubled in the past two years and many think this will make the crash worse. There was very little government debt in 1929.