Insulation Cupola Operator

Operate cupola furnaces and spin molten mineral into mineral wool fibers.
picture of Insulation Cupola Operator

Quick Stats


Salary Range
$22,000 – $51,000

Data from U.S. Department of Labor


What do Insulation Cupola Operators do?

Operates water-cooled cupola furnace and related equipment to melt coke, slag, basalt, lime, and silica into molten mineral, and spins molten mineral into mineral wool fibers: Lights fire in furnace to melt charge. Reads gauges and turns valves to regulate water and steam pressure. Observes melting of ingredients in furnace through porthole, and adjusts airblast on flaming coke bed to control intensity of heat and melting process. Activates spinning wheel. Removes taphole plug to allow molten stream to flow into water-cooled furnace trough, over high-pressure steam jet and into spinning wheel, to be spun into mineral wool fibers. Observes color intensity and flow of molten stream to determine suitability for spinning. Adjusts distance of steam ring and spinning wheel from end of trough to control length of spun fibers. Scrapes residue slag from trough and spinning wheel, using bar and scraper.


Should I be an Insulation Cupola Operator?

You should have a high school degree or higher and share these traits:
  • Reliable: You can always be counted on to do a good job.
  • Detail Oriented: You pay close attention to all the little details.
  • Team Player: You're able to listen, communicate, and work with tons of different people.

  • Also known as: Cupola Man, Cupola Operator, Insulation

    How to Become an
    Insulation Cupola Operator

    Most Insulation Cupola Operators have no higher education and get on-the-job training. Think about earning a Certificate to increase your competitiveness in the field. Chart?chd=s:a9baaa&chl=|no+college+%2897%25%29|certificate+%283%25%29|||&cht=p3&chs=466x180&chxr=0,0,97
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