https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12291332Edit ImageSaveSaveEditCropCustom TextPittsburgh (vicinity), Pennsylvania. Montour Number Four mine of the Pittsburgh Coal Company. Miners in the room where lamps are kept. 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 1140 x 1200 px | 300 dpiLarge JPEG 3326 x 3500 px | 300 dpiBest Quality JPEG 4808 x 5060 px | 300 dpiTIFF 4808 x 5060 px | 300 dpi | 46.4 MBFree DownloadPittsburgh (vicinity), Pennsylvania. Montour Number Four mine of the Pittsburgh Coal Company. Miners in the room where lamps are kept. Sourced from the Library of Congress.More