BOILER MAKER
A boilermaker is a trained tradesperson who fabricates steel, iron, or copper into boilers and other large containers intended to hold hot gas or liquid, as well as maintains and repairs boilers and boiler systems. This overlap of skills could extend to anything large and made of iron–or later, steel.
Boilermakers assemble, install, and repair boilers, closed vats, and other large vessels or containers that hold liquids and gases. They perform physically demanding, dangerous work.