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

Hecla Mining Co. fell $.14 or 2.0 percent, to $6.53.

Pan American Silver Corp. fell $.49 or 2.2 percent, to $21.43.

Silver Standard Resources Inc. fell $.19 or 1.3 percent, to $14.99.

Silver Wheaton fell $1.11 or 2.7 percent, to $39.38.

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