https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/441634Edit ImageSaveSaveEditCropCustom TextOperators test the National Aeronautics and Space Administration’s Plum Brook Reactor Facility systems. Original from NASA. Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 900 px | 300 dpiLarge JPEG 2048 x 1536 px | 300 dpiTIFF 2048 x 1536 px | 300 dpi | 18.02 MBFree DownloadOperators test the National Aeronautics and Space Administration’s Plum Brook Reactor Facility systems. Original from NASA. Digitally enhanced by rawpixel.More