"Oil stopped gushing into the Gulf of Mexico for the first time in nearly three months, as BP began testing the cap atop its stricken well, a critical step toward sealing the well permanently...Oil stopped flowing at 2:25 p.m. local time, Mr. Wells said, when engineers closed the choke line, the final seal of the well. Engineers and scientists will now examine the results of the tests every six hours to determine the pressure levels." - Lit