Shares of some top silver companies are mixed at 10 a.m.:

Hecla Mining Co. fell $.03 or .9 percent, to $3.41.

Pan American Silver Corp. fell $.01 or .1 percent, to $15.24.

Silver Standard Resources Inc. rose $.09 or 1.0 percent, to $8.67.

Silver Wheaton rose $.24 or .9 percent, to $26.22.