Anse Dawes held up the cigarette he had lighted; that was all the air-analyzer he needed. "That looks like enough oxygen," he said. "Yes, it makes its own ventilation; convection," Jacquemont said. "But you go to sleep in here, and you'll smother in a big puddle of your own exhaled CO_2. Just watch what the smoke from that cigarette's doing." The smoke was hanging motionless a few inches from the hot ash on the end of the cigarette. "We'll have to find the power plant, then," Matsui, the power-engineer said. "Down at the bottom and in the middle, I suppose, and anybody's guess how deep this place goes." "We'll find plans of the building," Jerry Rivas said. "Any big dig I've ever been on, you could always find plans. The troubleshooters always had them; security officer, and maintenance engineer." There were inside-use vehicles in the big room; they loaded what they had with them onto a couple of freight-skids and piled on, starting down a passage toward the center of the building. The passageways were well marked with direction-signs, and they found the administrative area at the top and center, around the base of the telecast-tower. The security offices, from which police, military guard, fire protection and other emergency services were handled, had a fine set of plans and maps, not only for the building itself but for everything else in Port Carpenter. The power plant, as Matsui had surmised, was at the very bottom, directly below. The only trouble, after they found it, was that it was completely dead. The reactors wouldn't react, the converters wouldn't convert, and no matter how many switches they shoved in, there was no power output. The inside telemetered equipment, of course, was self-powered. Some of them were dead, too, but from those which still worked Mohammed Matsui got a uniformly disheartening story. "You know what happened?" he said. "When this gang bugged out, back in 854, they left the power on. Now the conversion mass is all gone, and the plutonium's all spent. We'll have to find more plutonium, and tear this whole thing down and refuel it, and repack the mass-conversion chambers--provided nothing's eaten holes in itself after the mass inside was all converted." "How long will it take?" Conn asked. "If we can find plutonium, and if we can find robots to do the work inside, and if there's been no structural damage, and if we keep at it--a couple of days." "All right; let's get at it. I don't know where we'll find shipyards like these anywhere else, and if we do, things'll probably be as bad there. We came here to fix things up and start them, didn't we?" XIV