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

Hecla Mining Co. fell $.05 or .7 percent, to $6.62.

Pan American Silver Corp. rose $.13 or .6 percent, to $21.80.

Silver Standard Resources Inc. fell $.24 or 1.5 percent, to $15.66.

Silver Wheaton fell $.42 or 1.1 percent, to $38.80.

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