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

Hecla Mining Co. fell $.05 or 1.1 percent, to $4.45.

Pan American Silver Corp. fell $.59 or 3.9 percent, to $14.35.

Silver Standard Resources Inc. fell $.59 or 4.6 percent, to $12.20.

Silver Wheaton fell $1.00 or 3.6 percent, to $26.54.

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