processing of huge slag heaps after copper production in the city of karabash in chelyabinsk region

black catastrophe stones contamination ecological disaster poisoning big karabashmed landscape lifeless loader loading mountains opencast problems hill quarry restoration scoria surface tourism travel unfavorable pollution heavy truck global harmful car region waste desert dioxin dump chelyabinsk plant nonferrous business clouds smeltery excavator dead exploitation co2 climate excavation blue ural