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

Hecla Mining Co. fell $.29 or 4.2 percent, to $6.55.

Pan American Silver Corp. fell $.39 or 1.8 percent, to $21.44.

Silver Standard Resources Inc. fell $.38 or 2.3 percent, to $16.03.

Silver Wheaton rose $.29 or .7 percent, to $39.71.

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