Ключевые слова: busy, dangerous, dust, employee, engineer, engineering, facility, factory, fire, flames, flash, furniture, garage, gas, heat, heavy, horizontal, human, indoors, instrument, job, labor, machine, machinery, manufacture, manufacturing, mask, mechanic, occupation, one person, power, production, professional, protection, protective, repair, repairman, safety, skill, spark, sparkle, steel, technical, tool, wheel, worker, working, workplace, workshop,