NEW YORK (AP) -- Shares of some top silver companies are down at 10 a.m.:
Hecla Mining Co. fell $.01 or .3 percent, to $3.21.
Pan American Silver Corp. fell $.13 or 1.0 percent, to $11.96.
Silver Standard Resources Inc. fell $.14 or 2.1 percent, to $6.38.
Silver Wheaton fell $.35 or 1.6 percent, to $22.22.
