"I'm going to start loading up," Holmes announced abruptly. "You don't know how to stow stuff. You're not a yachtsman."

"I haven't got the shaft under control yet," said Burke.

"You'll get it," grunted Holmes.

He went out. Pam giggled again.

"He doesn't want me to go to the movies with the nice man from Security," she told Burke. "But I think I'd better. I'll let him ply me with popcorn and innocently let slip that Sandy and I know you've been warned that bomb shelters won't find a mass market unless they sell for less than the price of an extra bathroom. But if you want to go broke we don't care."

"Give me three days more," said Burke harassedly.

"Well try," said Sandy suddenly. "Pam can fix up a double date with one of her friend's friends and we'll both work on them."

Burke frowned absorbedly and went out. Sandy looked indignant. He hadn't protested.

Burke got Holmes' four workmen out of the ship and had them help him roll the bronze shaft to the pit and let it down onto a cradle of timbers. Now if it moved it would have to penetrate solid earth.

The most trivial of computations showed that when the bronze shaft had flown thirty miles, it hadn't done it on the energy of a condenser shorted through its coils. The energy had come from somewhere else. Burke had an idea where it was.