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

Hecla Mining Co. rose $.15 or 2.5 percent, to $6.09.

Pan American Silver Corp. fell $1.07 or 5.0 percent, to $20.36.

Silver Standard Resources Inc. rose $.24 or 1.6 percent, to $14.93.

Silver Wheaton rose $.48 or 1.2 percent, to $40.60.

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