https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12314803Edit ImageSaveSaveEditCropCustom TextPouring a test mold while blast furnace is being tapped, Pittsburgh, Pennsylvania. 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 860 px | 300 dpiLarge JPEG 3500 x 2508 px | 300 dpiBest Quality JPEG 4319 x 3095 px | 300 dpiTIFF 4319 x 3095 px | 300 dpi | 25.5 MBFree DownloadPouring a test mold while blast furnace is being tapped, Pittsburgh, Pennsylvania. Sourced from the Library of Congress.More