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

Hecla Mining Co. rose $.02 or .3 percent, to $6.51.

Pan American Silver Corp. fell $.22 or 1.0 percent, to $21.17.

Silver Standard Resources Inc. rose $.26 or 1.7 percent, to $15.12.

Silver Wheaton rose $.07 or .2 percent, to $39.29.

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