It was market carnage, the largest one-day drop of the Dow Jones Industrial Average in economic history. In a single day, almost 23 per cent of the value of the American stock market was wiped out with repercussions that saw $1.7 trillion knocked off stock markets around the world. It was a time of panic, despair and uncertainty, when everything only seemed to go downward. It was October 19, 1987, and it quickly became known as Black Monday. Even now, 33 years later, Liam Booth can still recall the day vividly. Liam Booth was only in his second year as…