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

Hecla Mining Co. fell $.01 or .2 percent, to $5.93.

Pan American Silver Corp. fell $.97 or 4.5 percent, to $20.46.

Silver Standard Resources Inc. fell $.28 or 1.9 percent, to $14.41.

Silver Wheaton fell $.14 or .3 percent, to $39.98.

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