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

Hecla Mining Co. fell $.21 or 3.1 percent, to $6.46.

Pan American Silver Corp. fell $.44 or 2.1 percent, to $20.64.

Silver Standard Resources Inc. fell $.50 or 3.2 percent, to $15.32.

Silver Wheaton fell $.33 or .9 percent, to $38.01.

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