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

Hecla Mining Co. fell $.13 or 2.8 percent, to $4.50.

Pan American Silver Corp. rose $.24 or 1.6 percent, to $14.94.

Silver Standard Resources Inc. fell $.28 or 2.1 percent, to $12.79.

Silver Wheaton fell $.52 or 1.9 percent, to $27.54.

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