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

Hecla Mining Co. rose $.04 or 1.0 percent, to $4.25.

Pan American Silver Corp. fell $.04 or .3 percent, to $13.63.

Silver Standard Resources Inc. rose $.18 or 1.6 percent, to $11.69.

Silver Wheaton fell $.17 or .7 percent, to $25.33.

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