https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12295791Edit ImageSaveSaveEditCropCustom TextPhelps Dodge refining company, El Paso, Texas. Smeltered copper being put on conveyors. 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 1157 x 1200 px | 300 dpiLarge JPEG 3376 x 3500 px | 300 dpiBest Quality JPEG 4900 x 5080 px | 300 dpiTIFF 4900 x 5080 px | 300 dpi | 47.5 MBFree DownloadPhelps Dodge refining company, El Paso, Texas. Smeltered copper being put on conveyors. Sourced from the Library of Congress.More