Silver companies shares down at 10 a.m.

MarketsAssociated Press

Shares of some top silver companies are down at 10 a.m.:

Hecla Mining Co. fell $.01 or .3 percent, to $2.99.

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Pan American Silver Corp. unchanged at $9.12.

Silver Standard Resources Inc. fell $.06 or 1.1 percent, to $5.33.

Silver Wheaton fell $.06 or .3 percent, to $18.99.