grc-1956-c-43036_origNACA official Addison Rothrock, speaks at the groundbreaking for the Plum Brook Reactor Facility in 1956. Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/grc-1956-c-43036_orig/Copy URL to clipboard> DownloadShareTagsWebMod GrandfatheredSize2048x1536px