https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14008150Edit ImageSaveSaveEditCropCustom TextSouth Africa: miners at the main reef workings of the Ferreira Gold Mining Company. Woodburytype, 1888, after a photograph by Robert Harris.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 792 px | 300 dpiLarge JPEG 3252 x 2145 px | 300 dpiFree DownloadSouth Africa: miners at the main reef workings of the Ferreira Gold Mining Company. Woodburytype, 1888, after a photograph by Robert Harris.More