Ключевые слова: angle, building, circle, circular, construction, craft, cut, cutting, danger, disc, electric, equipment, factory, grind, grinder, hand, industrial, industry, iron, job, light, machine, manual, manufacture, manufacturing, mechanic, metal, nobody, one, power, production, protection, protective, repair, safety, saw, spark, sparks, speed, steel, structure, technical, technology, tool, turning, wheel, work, worker, workshop,