NEW YORK (AP) â¿¿ Shares of some top silver companies were mixed at the close of trading:

Hecla Mining Co. rose $.03 or .7 percent, to $4.61.

Pan American Silver Corp. fell $.03 or .2 percent, to $15.35.

Silver Standard Resources Inc. rose $.16 or 1.3 percent, to $12.54.

Silver Wheaton rose $.31 or 1.0 percent, to $30.75.

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