Ключевые слова: 20s, 50s, african american, apprentice, apprenticeship, black, caucasian, cnc machine, design, discussion, engineer, engineering, factory, fifties, four people, horizontal, industry, interior, learning, machine, machine milling, machinery, male, man, manufacturing, meeting, men, metal workshop, mixed race, modern, multicultural, multiethnic, occupation, operator, people, person, precision, skill, skilled, small business, technology, trainee, training, twenties, worker, working, workshop,