Image: US fallout exposure

Description: Per capita thyroid doses in the continental United States of Iodine-131 resulting from all exposure routes from all atmospheric nuclear tests conducted at the Nevada Test Site.
Title: US fallout exposure
Credit: Slightly modified (whitespace made transparent, converted to PNG) from Figure 1 in Study Estimating Thyroid Doses of I-131 Received by Americans From Nevada Atmospheric Nuclear Bomb Test, National Cancer Institute (1997) [1]
Author: National Cancer Institute
Permission: Created by National Cancer Institute as part of a Congressionally funded study. Acknowledgments do not indicate artwork was created by a contractor or give any reason to think that it is copyrighted. NCI copyright policy[2] says that works created by them are public domain. Artwork is of dubious "creativity" anyway (is a mapping of scientific facts onto US counties).
Usage Terms: Public domain
License: Public domain
Attribution Required?: No