https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12269703Edit ImageSaveSaveEditCropCustom TextProspector testing ore samples. Esmeralda County, Nevada. 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 921 px | 300 dpiLarge JPEG 3500 x 2687 px | 300 dpiBest Quality JPEG 13870 x 10650 px | 300 dpiTIFF 13870 x 10650 px | 300 dpi | 281.88 MBFree DownloadProspector testing ore samples. Esmeralda County, Nevada. Sourced from the Library of Congress.More