Possible Clues:

• Fissile element
• Chemical element used to get nuclear energy
• One with brain about to become university element
• _____ City (Saskatchewan ghost town)
• One's written on table at school? A case for the head, given united front
• Silvery-white radioactive element
• The oxide yellowcake is often made in ____ production
• The mineral pitchblende is a form of ____ dioxide
• U
• Metal identified from horseshoe-shaped symbol?