The responsibilities of a kiln operator or kiln fireman revolve around setting up and controlling a furnace or oven to dry, bake, or burn materials. Your duties in this career depend on your employer and your industry. You usually calibrate the kiln and operate it during the firing, baking, or drying process. You are often also responsible for taking steps to slow-cool the items. As a kiln operator, you may work with lumber drier kilns or in a funeral home or other facility to operate the equipment used to cremate bodies.