https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12337688Edit ImageSaveSaveEditCropCustom TextEl Paso, Texas. Phelps Dodge refining company. Trimming bars of pure copper. 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 1182 x 1200 px | 300 dpiLarge JPEG 3446 x 3500 px | 300 dpiBest Quality JPEG 4885 x 4961 px | 300 dpiTIFF 4885 x 4961 px | 300 dpi | 46.25 MBFree DownloadEl Paso, Texas. Phelps Dodge refining company. Trimming bars of pure copper. Sourced from the Library of Congress.More