US markets tank, March 16-20: Sandstorm, Alamos Gold, Rio Tinto
The Dow Jones Industrial Average fell 17.30% (4,011.64 points) to 19,173.98 and the S&P 500 dropped 14.98%(4,061.1 points) to 2,304.92 during the Mar. 16-20 trading week. Spot gold fell US$31.10…