NEW YORK, May 5 (UPI) -- Gold and silver prices plunged Thursday as the lead U.S. metals exchange announced additional increases in trading requirements for silver.
Silver for July delivery dropped $3.15, or 8 percent, to $36.24 an ounce on the Comex division of the New York Mercantile Exchange, the largest one-day percentage drop since Dec. 1, 2008.