Ключевые слова: background, bit, black, boring, cast, circle, coal, danger, detail, draw, drill, drilling, energy, engine, equipment, excavation, exploitation, explosive, fan, gold, head, hole, industrial, industry, jumbo, lithium, machine, machinery, mechanic, mechanical, metal, mine, new, old, open, part, prick, rock, safety, shadow, shield, speed, steel, teeth, time, tool, tunnel, work,