Welding is a specialized technique used for joining metallic parts usually through the application of heat. Modern fusion welding processes are an outgrowth of the need to obtain a continuous joint on steel plates. In fusing welding, a heat source generates sufficient heat to create and maintain a molten pool of metal of the required size. A welding technician must have the required ability and talent to perform any welding process. Working independently, time and expertise must be responsible and well-managed. Good interpersonal skills for interacting with a welding crew are critical. U.S. Department of labor, Bureau of Labor Statistics, Occupation Handbook.