https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12273270Edit ImageSaveSaveEditCropCustom TextSmelter, Anaconda copper mine. Montana. 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 919 px | 300 dpiLarge JPEG 3500 x 2681 px | 300 dpiBest Quality JPEG 13788 x 10563 px | 300 dpiTIFF 13788 x 10563 px | 300 dpi | 138.99 MBFree DownloadSmelter, Anaconda copper mine. Montana. Sourced from the Library of Congress.More