Ключевые слова: 40s, factory, factory environment, factory machinery, factory operation, factory worker, heavy machinery, industrial equipment, industrial job, industrial labor, industrial manufacturing, industrial operation, industrial profession, industrial safety, industrial setting, industrial skill, industrial work, machine efficiency, machine operation, machine worker, machinery focus, machinery handling, machinery operation, male industrial worker, manufacturing, manufacturing industry, manufacturing process, manufacturing worker, production environment, production line, production worker, protective gear, skilled worker, technical expertise, technical operation, technical skill,