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

Hecla Mining Co. rose $.05 or .7 percent, to $6.72.

Pan American Silver Corp. rose $.50 or 2.4 percent, to $21.58.

Silver Standard Resources Inc. rose $.23 or 1.5 percent, to $16.05.

Silver Wheaton rose $.52 or 1.4 percent, to $38.86.

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