NEW YORK (AP) a¿¿ Shares of some top gold companies were mixed at the close of trading: Barrick Gold Corp. rose $.28 or 1.7 percent, to $16.74. Gold Fields Ltd ADS fell $.10 or 2.8 percent, to $3.41. GoldCorp. fell $.07 or .3 percent, to $21.06. Newmont Mining Corp. unchanged at $23.28.