NEW YORK (AP) â¿¿ Shares of some top silver companies are up at 10 a.m.:
Hecla Mining Co. rose $.07 or 1.2 percent, to $5.94.
Pan American Silver Corp. rose $.03 or .2 percent, to $18.86.
Silver Standard Resources Inc. rose $.08 or .6 percent, to $13.63.
Silver Wheaton rose $.14 or .4 percent, to $36.40.
