VANCOUVER, B.C. ─ Diluted bitumen won’t exactly sink most of the time but it won’t exactly float all of the time, either, according to new evidence filed with the Joint Review Panel hearing the Enbridge Northern Gateway application in Prince Rupert. In cross-examination by Ecojustice counsel Karen Campbell today, Enbridge consultants admitted that tank test evidence filed this week found dilbit did submerge beneath the surface of the water, although none was found to have sunk to the bottom of the tank.