"What's going on out there?" demanded McIlroy on the intercom.
"Scale stuck in the valve," Cowalczk answered.
"Are the reactors off?"
"Yes. Vat blew. Shut up! Let me work, Mac!"
"Sorry," McIlroy said, realizing that this was no time for officials. "Let me know when it's fixed."
"Geiger's off scale," Lehman said.
"We're probably O.K. in these suits for an hour," Cowalczk answered. "Is there a manual shut-off?"
"Not that I know of," Lehman answered. "What about it, Cade?"
"I don't think so," Cade said. "I'll get on the blower and rouse out an engineer."
"O.K., but keep working that switch."