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

Hecla Mining Co. rose $.12 or 2.6 percent, to $4.67.

Pan American Silver Corp. rose $.56 or 3.7 percent, to $15.46.

Silver Standard Resources Inc. rose $.39 or 3.1 percent, to $12.95.

Silver Wheaton rose $.54 or 2.0 percent, to $28.16.

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