Comic Title: Adventure Comics #335
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: August 1965
On Sale Date: June 24, 1965 Copyright Date June 24, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "Superboy's Underground Exile"
Pages: 8

Feature(s):
Superboy (of Earth-1)

Writer: Otto Binder
Artist: Al Plastino

Reprinted From:
Superboy #59 (1957)

Feature Character(s)

• Superboy (last appearance in Adventure Comics #271; next appearance in Superboy #59)

Other Character(s)

• A scientist and various government officials (no further appearances)

Comments:
"A Hall of Fame Classic".

Synopsis:
Superboy assists the government with the test of a new underground missile. Superboy tracks the missile using his x-ray vision near Fort Knox. After the test is completed, Superboy stays underground, refusing to return to the surface. The scientist in charge of the missile test believes that Superboy was contaminated by radiation from the missile and is staying underground to prevent the radiation from spreading.

While underground, Superboy finds several gold deposits and begins collecting gold. He molds the gold into ingots, amassing a fortune. After two days he drills into Fort Knox and places his gold inside. While tracking the missile, Superboy's x-ray vision transmuted the gold inside Fort Knox into lead. To prevent a worldwide economic scare, Superboy stayed underground until the gold was replaced. When his mission is complete, Superboy's returns to the surface keeping the secret of the accident to himself.