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

Hecla Mining Co. fell $.04 or .9 percent, to $4.66.

Pan American Silver Corp. rose $.09 or .6 percent, to $15.60.

Silver Standard Resources Inc. fell $.17 or 1.3 percent, to $12.99.

Silver Wheaton rose $.22 or .8 percent, to $28.55.

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