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

Hecla Mining Co. rose $.03 or .6 percent, to $4.93.

Pan American Silver Corp. fell $.08 or .5 percent, to $16.30.

Silver Standard Resources Inc. unchanged at $12.87.

Silver Wheaton rose $.22 or .7 percent, to $31.87.

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