Possible Clues:

• Back securing key to nuclear installation
• Odd bits of cotton put in to bring up pile
• Atomic energy unit
• There's something chemical about one of the cast
• Energy-producing device player of Egyptian god employed
• It sounds like something new and clear about one in play
• Apparatus for production of nuclear energy
• What's the matter with the one in play that you can get 24 across from it?
• Clergyman touring a power plant
• Powerful agency about to take on a member of the cast