Ключевые слова: action, air pollution, bulldozer, cloudy, color image, digging, dirt, dirty, dump truck, dust, engine, engineering, environmental damage, excavator, gravel, heavy industry, horizontal, industry, land vehicle, large, loading, manufacturing equipment, metal, mining, openpit mine, pollution, quarry, red, rock, sand, scoop, side view, strength, tire, transportation, truck, trucking, working,