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

Hecla Mining Co. fell $.02 or .3 percent, to $5.79.

Pan American Silver Corp. fell $.08 or .4 percent, to $18.50.

Silver Standard Resources Inc. unchanged at $15.07.

Silver Wheaton fell $.20 or .6 percent, to $36.02.

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