https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12295539Edit ImageSaveSaveEditCropCustom TextPhelps Dodge refining company, El Paso, Texas. Casting copper ingots. Sourced from the Library of Congress.View public domain image source hereMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseEditorial use only JPEGTIFFSmall JPEG 1200 x 1196 px | 300 dpiLarge JPEG 3500 x 3487 px | 300 dpiBest Quality JPEG 4928 x 4910 px | 300 dpiTIFF 4928 x 4910 px | 300 dpi | 46.17 MBFree DownloadPhelps Dodge refining company, El Paso, Texas. Casting copper ingots. Sourced from the Library of Congress.More