NEW YORK (AP) â¿¿ Shares of some top silver companies are mixed at 10 a.m.:

Hecla Mining Co. fell $.01 or .2 percent, to $6.58.

Pan American Silver Corp. rose $.15 or .7 percent, to $21.64.

Silver Standard Resources Inc. rose $.16 or 1.0 percent, to $16.46.

Silver Wheaton rose $.16 or .4 percent, to $39.71.

Copyright 2011 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.