Back at Zawiyah oil refinery, several workers had returned, keen to get production going. Libya has the largest proven oil reserves in Africa (43.6bn barrels) and the third-largest proven natural gas reserves (1.5bn cubic metres), facts that cannot have escaped the notice of western allies now patrolling the skies above Libya, and planning for a post-Gaddafi Libya. Most of Libya's oil and gas already goes to Europe, with Italy, Germany, Spain and France key customers, and US energy firms involved in joint ventures.
Hamad, who worked at the refinery for 14 years, said staff hoped much-needed modernisation and foreign investment could finally happen. "Since 1979, we have been asking for the refinery to be revamped to maximise gasoline and minimise heavy fuel oil. We asked but the Gaddafi regime didn't let us do it. All we need to do is to add some units," he said. Behind him, a seagull flapped languidly over the water.
If Gaddafi gets turfed out of Tripoli, the prospects for large western oil companies will be more enticing than ever. One rebel put it like this: "The future between us and you will be very shiny."