https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12287477Edit ImageSaveSaveEditCropCustom TextThe casing is cemented to insure tightness. Safe well demonstration near La Plata, Maryland, Charles County. 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 894 px | 300 dpiLarge JPEG 3500 x 2607 px | 300 dpiBest Quality JPEG 8700 x 6480 px | 300 dpiTIFF 8700 x 6480 px | 300 dpi | 107.53 MBFree DownloadThe casing is cemented to insure tightness. Safe well demonstration near La Plata, Maryland, Charles County. Sourced from the Library of Congress.More