NEW YORK (AP) â¿¿ Shares of some top silver companies are mixed at 1 p.m.:

Hecla Mining Co. unchanged at $6.67.

Pan American Silver Corp. rose $.03 or .1 percent, to $21.11.

Silver Standard Resources Inc. fell $.31 or 2.0 percent, to $15.51.

Silver Wheaton rose $.19 or .5 percent, to $38.53.

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