Ключевые слова: alaska, austria, bhp, billiton, coal, color, copper, demand, digging, economy, energy, environment, equipment, extraction, gold, heavy, industrial, industry, iron, isolated, landscape, large, machine, machinery, metal, mine, mineral, mining, mountains, nature, open, open pit, ore, panorama, power, quarry, resources, rio tinto, road, russia, rustbelt, stone, sustainability, tipper, truck, vale, winter, work, yellow,