Ключевые слова: background, big, broken, construction, construction machinery, copper, copper mine, digger, dirt, dirty, earth, engineering, equipment, excavation, excavator, extraction, gold mine, heap, heavy, hydraulic, industrial, industry, machine, machinery, metal, mine, mining, natural resources, old, pit, power, quarry, rock, roia montan, romania, rusty, stone, technology, vintage, work,