chunk: As the disaster becomes progressively more serious, Ken and his friends in the high school’s science club prepare to study samples of the fused metal at the local college, where Ken’s father teaches chemistry, and to try to get a sample of what the comet is putting into Earth’s atmosphere. While they work, Mayfield is cut off from the outside world and the mayor and the sheriff impose rationing against the anticipated shortages.
  After a short stint in a wood-cutting crew bringing in fuel for the coming winter, Ken is called to assist in the work at the college. Along with his friends and the other scientists, he helps with experiments aimed at identifying the cause of the cold-welding phenomenon. A spectroscopic look through a telescope, compared to spectrograms of the affected metals confirms that the comet is the source of the trouble. At the same time Ken and his friends make contact with several ham radio operators around the country, intending to share information.