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

Hecla Mining Co. fell $.04 or .7 percent, to $5.88.

Pan American Silver Corp. fell $.34 or 1.6 percent, to $21.27.

Silver Standard Resources Inc. fell $.25 or 1.7 percent, to $14.42.

Silver Wheaton rose $.22 or .6 percent, to $39.75.

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