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

Hecla Mining Co. fell $.05 or .8 percent, to $6.47.

Pan American Silver Corp. rose $.09 or .4 percent, to $21.30.

Silver Standard Resources Inc. fell $.17 or 1.1 percent, to $14.66.

Silver Wheaton rose $.20 or .5 percent, to $39.26.

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