NEW YORK (AP) â¿¿ Shares of some top silver companies are mixed at 10 a.m.:

Hecla Mining Co. fell $.03 or .5 percent, to $6.59.

Pan American Silver Corp. fell $.05 or .2 percent, to $21.75.

Silver Standard Resources Inc. fell $.10 or .6 percent, to $15.56.

Silver Wheaton rose $.17 or .4 percent, to $38.97.

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