A furnace operator controls a gas, coal, electric, oil, or other type of furnace in preparation to melt metal, usually at a foundry or refinery. Your duties include operating the machine on a daily basis and performing sample tests to verify that the equipment is functional. Your responsibilities may include making detailed analyses of the materials you melt, ensuring that every melting operation is performed to specifications, and conducting maintenance and safety checks on all equipment. The career requires excellent mechanical skills and the ability to use measurement tools such as calipers, gauges, and scales.