Ключевые слова: anthracite, anthracite coal, big, coal, coal extraction, coal mine, digger, earthmover, efficient, efficiently, energy production, excavation, excavator, extract, extraction, haul truck, heavy machinery, industrial mining, industry, large, material handling, mine, mining, mining industry, mining operations, mining truck, open, open pit, pit, production process, resource extraction, truck, vehicle, yellow,