https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/12151430Edit ImageSaveSaveEditCropCustom TextThis workman controls amounts of materials going into concrete used in construction of Shasta Dam. Shasta County, California by Russell LeeView public domain image source hereMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 930 px | 300 dpiLarge JPEG 3500 x 2711 px | 300 dpiBest Quality JPEG 14286 x 11067 px | 300 dpiTIFF 14286 x 11067 px | 300 dpi | 150.8 MBFree DownloadThis workman controls amounts of materials going into concrete used in construction of Shasta Dam. Shasta County, California by Russell LeeMore