https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12275309Edit ImageSaveSaveEditCropCustom TextIn a good mine a man can dig a thousand pounds of tiff ore a day. Washington County, Missouri. 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 918 px | 300 dpiLarge JPEG 3500 x 2678 px | 300 dpiBest Quality JPEG 13859 x 10605 px | 300 dpiTIFF 13859 x 10605 px | 300 dpi | 280.67 MBFree DownloadIn a good mine a man can dig a thousand pounds of tiff ore a day. Washington County, Missouri. Sourced from the Library of Congress.More