/ Source: The Associated Press
Shares of some top silver companies are down at 1 p.m.:
Hecla Mining fell $.66 or 7.4 percent, to $8.26.
Pan American Silver fell $2.02 or 5.3 percent, to $36.23.
Silver Standard fell $1.19 or 4.5 percent, to $25.25.
Silver Wheaton fell $2.30 or 6.5 percent, to $33.09.