A Boilermaker is a highly skilled tradesman who erects and maintains various types of pressure vessels. These vessels include small boilers in schools and hospitals, coal fired boilers in power generation plants, blast furnaces and basic oxygen furnaces in the steel industry, precipitators and scrubbers which clean the exhaust from these furnaces and boilers, and numerous other tanks and pressurized containment vessels in industrial plants. Welding, burning, heavy and high rigging, and layout work are the most important skills a Boilermaker needs to perform his job.