https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8799715Edit ImageSaveSaveEditCropCustom TextGamma radiation counters at EPA's Las Vegas National Research Center, May 1972. Photographer: O'Rear, Charles. Original public domain image from FlickrMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 814 px | 300 dpiLarge JPEG 3000 x 2034 px | 300 dpiFree DownloadGamma radiation counters at EPA's Las Vegas National Research Center, May 1972. Photographer: O'Rear, Charles. Original public domain image from FlickrMore