Ключевые слова: apprentice, apprenticeship, business, caucasian, drill, drilling, engineer, engineering, equipment, factory, holding, horizontal, industry, job, learning, looking, machinery, machinist, maintenance, male, man, manufacturing, mechanic, men, occupation, one, operating, person, precision, professional, service, shop, small, smiling, standing, technician, thirties, tool, trainee, training, transportation, tube, uniform, vehicle, worker, working, workman, workshop, young,