NEW YORK (AP) â¿¿ Shares of some top silver companies are down at 10 a.m.:
Hecla Mining Co. fell $.04 or 1.2 percent, to $3.18.
Pan American Silver Corp. fell $.02 or .2 percent, to $10.87.
Silver Standard Resources Inc. fell $.16 or 2.5 percent, to $6.21.
Silver Wheaton fell $.30 or 1.2 percent, to $23.98.
