Tiny Reactor May Aid Biodiesel Production (AP)Used cooking oil is drained from the fryers into a oil 'dog' or caddy at a Burgerville Restaurant in Salmon Creek, north of Vancouver, Wash., Thursday, March 9, 2006. The restaurant has a state of the art system for the recycling and pick-up of used cooking oil for biodiesel production. (AP Photo/Greg ... 2006-04-19 19:47:00 see all