Ключевые слова: apprenticeship, boilermaker, braze, construction, craftsman, cut, design, engineering, equipment, fabrication, fitting, fusion, heavy, helmet, industrial, ironwork, joint, laborer, machine, machinery, maintenance, manufacture, marine, metal, metalwork, ornamental, process, repair, rig, safety, shipbuilder, shipyard, structure, technique, torch, ventilation, welder, work, workplace, workshop,