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

Hecla Mining Co. fell $.04 or .7 percent, to $5.44.

Pan American Silver Corp. fell $.25 or 1.4 percent, to $18.02.

Silver Standard Resources Inc. fell $.28 or 1.8 percent, to $15.22.

Silver Wheaton fell $.24 or .7 percent, to $34.90.

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 This material may not be published, broadcast, rewritten or redistributed.