NEW YORK (AP) â¿¿ Shares of some top silver companies were down at the close of trading:

Hecla Mining Co. fell $.13 or 2.0 percent, to $6.49.

Pan American Silver Corp. fell $.41 or 1.9 percent, to $21.39.

Silver Standard Resources Inc. fell $.53 or 3.4 percent, to $14.86.

Silver Wheaton fell $.67 or 1.7 percent, to $39.22.

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 This material may not be published, broadcast, rewritten or redistributed.