Action Comics 342, Oct 1966 comics.org

Shooter's Credit: writer
Story Title: The Super-Human Bomb!
Publisher: DC
Reading Status: required

Script: Jim Shooter
Pencils: Wayne Boring
Inks: Wayne Boring
Colors: unknown
Letters: unknown

Synopsis: Grax steals Brainiac's force-shield and mercifully leaves him unconsciously adrift in a space life-boat. Grax latches a K-Meson bomb onto Superman and uses Brainiac's force-shield to trap Superman on Earth.

Characters: Superman, Brainiac, Grax, Lois Lane, Professor Potter

Places: Metropolis, Daily Planet, Mariana Trench

Things: K-Meson Bomb

Cliffhanger: With zero-hour near, all scientific efforts have failed in disarming the bomb.

Conclusion: Brainiac regain consciousness and seeks revenge on Grax for stealing his force-shield. Brainiac though-casts plans for Superman to build a giant magnet. The magnet pins Grax's ship to the force-shield surrounding Earth. Fearing for his own safety, Grax opens a hole in the force-shield to let Superman through and onto Grax's ship. The bomb goes off destroying Grax's ship and Earth is saved because of the force-shield. Grax turned himself into an immaterial phantom and is last seen hurtling though space. Superman saved Brainiac's force-shield and built him a new spaceship as thanks.

Notes: Shooter's writing credit obtained from reprint in DC Special 18, October-November 1975.