Ключевые слова: blade, circle, construction, craft, cut, dangerous, detail, disc, disk, electric, engineering, equipment, fabricate, factory, fire, fitter, flame, flash, grinder, grinding, heat, heavy, hot, industrial, iron, job, labor, light, machine, manual, mechanical, metal, production, repairing, safety, saw, skill, spark, speed, steel, steel rod, tool, welder, welding, wheel, work, worker,