NEW YORK (AP) -- Shares of some top construction companies are mixed at 1 p.m.:
Fluor fell $.16 or .2 percent, to $64.84.
Foster Wheeler rose $.05 or .2 percent, to $23.18.
Quanta Services Inc. fell $.08 or .3 percent, to $29.32.
Stocks fell at the open on Friday, putting Wall Street on track for its first weekly decline since mid April, amid …