One of us would be sure to find it. Unless, of course—" Hyrst stopped, and the tension in the sick-bay tightened another notch. The ship lurched sharply, swerved, and shot upward with a deafening thunder of rocket-blasts. Hyrst shut his eyes, thinking hard. "Unless he put it in some place so dangerous that nobody ever went there. A place where even he didn't go, but which he would know about being the engineer." "Can you think of any place that would answer that description?" "Yes," said Hyrst slowly. "The underground storage bins. They're always hot, even when they're empty. Anything hidden near them would be blanketed by radiation. No detector would see anything but uranium. Probably even you wouldn't." "No," said Shearing, looking amazed. "Probably we wouldn't. The radioactive disturbance would be too strong to get through, even if we were looking for something beyond it, which we weren't." Christina had sprung up. Now she bent over Hyrst and said, "But is there a way it could have been done? Obviously, the Titanite couldn't have been put directly into the bin with the uranium—if nothing else, it would have been shipped out in the next tanker." "Oh, yes," said Hyrst. "There would be several ways. I can think of a couple myself, and I've never even see the layout. The repair-lift shaft, I know, goes clear down to the feeder mechanism, and there's some kind of a system of dispersal tunnels and an emergency gadget that trips automatically to release a liquid-graphite damping material into them in case the radiation level gets too high. I don't remember that it ever did, but it's a safeguard. There'd be plenty of places to hide a lead box full of Titanite." "Unless I show them how," repeated Shearing slowly, and began to undo the straps that held Hyrst to the table. "It has an ominous sound. I'll bet you that locating the Titanite will be child's play compared to getting it out. Well, we'll do what we can." "The first thing," said Christina grimly, "is to get rid of Bellaver. If he has the slightest suspicion where we're headed he'll radio ahead and have all Titan alerted." Hyrst, sitting up now on the edge of the table, hanging on against the lurching of the ship, said, "That's right—he owns the refinery now, doesn't he? Is it still working?"