Transvaal, South Africa: a gold mining valley occupied by Union Company and Pioneer United Company, with Barberton in the… https://www.rawpixel.com/image/14014705/photo-image-plant-person-skyFree Image from public domain licenseMineral extraction: using water to expose gold-bearing rock at the Transvaal gold fields. Wood engraving, 1889. https://www.rawpixel.com/image/14008494/image-person-sky-goldFree Image from public domain licenseTransvaal, South Africa: Bray's Golden Quarry on Sheba Reef. Woodburytype, 1888, after a photograph by Robert Harris. https://www.rawpixel.com/image/14004073/photo-image-plant-tree-goldenFree Image from public domain licenseTransvaal, South Africa: main reef workings of the Witwatersrand mine. Woodburytype, 1888, after a photograph by Robert… https://www.rawpixel.com/image/13998842/photo-image-horse-cow-personFree Image from public domain license