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

Hecla Mining Co. fell $.06 or 1.1 percent, to $5.16.

Pan American Silver Corp. fell $.15 or .9 percent, to $16.69.

Silver Standard Resources Inc. fell $.25 or 1.8 percent, to $13.74.

Silver Wheaton fell $.50 or 1.5 percent, to $32.89.

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