https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12285190Edit ImageSaveSaveEditCropCustom TextBlock and tackle hung from windlass serve as a rig to lower cement cap into place. John Hardesty well project, Charles County, Maryland. 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 1165 x 1200 px | 300 dpiLarge JPEG 3399 x 3500 px | 300 dpiBest Quality JPEG 4788 x 4930 px | 300 dpiTIFF 4788 x 4930 px | 300 dpi | 45.05 MBFree DownloadBlock and tackle hung from windlass serve as a rig to lower cement cap into place. John Hardesty well project, Charles County, Maryland. Sourced from the Library of Congress.More