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

Hecla Mining Co. rose $.01 or .3 percent, to $3.12.

Pan American Silver Corp. rose $.11 or .8 percent, to $14.16.

Silver Standard Resources Inc. fell $.13 or 1.5 percent, to $8.64.

Silver Wheaton rose $.23 or .9 percent, to $24.51.