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

Hecla Mining Co. fell $.04 or .6 percent, to $6.80.

Pan American Silver Corp. unchanged at $21.83.

Silver Standard Resources Inc. rose $.02 or .1 percent, to $16.43.

Silver Wheaton rose $.03 or .1 percent, to $39.45.

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