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

Hecla Mining Co. fell $.03 or .6 percent, to $5.26.

Pan American Silver Corp. fell $.17 or 1.0 percent, to $17.02.

Silver Standard Resources Inc. fell $.19 or 1.3 percent, to $14.26.

Silver Wheaton fell $.18 or .5 percent, to $33.22.

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