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

Hecla Mining Co. fell $.09 or 1.9 percent, to $4.62.

Pan American Silver Corp. fell $.15 or .9 percent, to $15.64.

Silver Standard Resources Inc. fell $.31 or 2.4 percent, to $12.70.

Silver Wheaton rose $.04 or .1 percent, to $30.68.

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