A close up shot dollying across the crumbled surface of an old tailings mine dump, the mound consisting of discarded by products from the extraction of ore from the Gangue, Johannesburg, South Africa

tailings pyrite crumbling topographies slurry mound sulphuric acid metallurgical surface lead wall residue arsenic layers ore macro discarded close up sludge main reef environment deposit embankment slimes dam mine material uranium commodities dump heavy metal waste radioactive gangue reclaim old witwatersrand bleached bank dolly johannesburg toxic gold south africa remining chemicals orange jhb yellow by product