https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12337305Edit 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 1136 x 1200 px | 300 dpiLarge JPEG 3312 x 3500 px | 300 dpiBest Quality JPEG 4860 x 5136 px | 300 dpiTIFF 4860 x 5136 px | 300 dpi | 47.61 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