Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Fair Plans

Fallout

Fallout Shelters

Search our library’s catalog with this term

The deposition of radioactive particles from the atmosphere arising from: 1) natural causes; 2) nuclear bomb explosions and 3) induced radioactivity and atomic reactor accidents.

Search again