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

Hecla Mining Co. fell $.03 or .9 percent, to $3.39.

Pan American Silver Corp. rose $.04 or .3 percent, to $15.22.

Silver Standard Resources Inc. rose $.01 or .2 percent, to $8.48.

Silver Wheaton rose $.09 or .3 percent, to $25.91.