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

Hecla Mining Co. fell $.07 or 1.3 percent, to $5.22.

Pan American Silver Corp. fell $.35 or 2.0 percent, to $16.84.

Silver Standard Resources Inc. fell $.46 or 3.2 percent, to $13.99.

Silver Wheaton fell $.01 or percent, to $33.39.

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