Ключевые слова: art, axe, belt, cave, color, colorful, construction, conveyor, danger, dig, dynamite, entrance, equipment, explosive, gem, geology, gold, hammer, icon, illustration, industrial, industry, iron, isolated, jewelry, machine, metal, mine, miner, mineral, pick, pop, popart, power, ring, rock, safety, set, steel, stone, time, tool, treasure, tunnel, wheel, white,