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

Hecla Mining Co. fell $.21 or 3.2 percent, to $6.28.

Pan American Silver Corp. fell $.67 or 3.1 percent, to $20.73.

Silver Standard Resources Inc. fell $.40 or 2.7 percent, to $14.38.

Silver Wheaton fell $.80 or 2.1 percent, to $37.44.

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