Heatizon’s Hott-Wire MI cable traces its origins back to 1896 when the first patent for Mineral Insulated Cable was issued. The cable was used on ships and other projects in the years leading up to World War Two when it was used in military equipment. MI cable is very durable and used frequently in powering and controlling critical equipment including nuclear reactors, fire alarms, and emergency systems. The 1930s saw the use of MI cable in Heat Tracing with cable designed specifically for this use entering production in the 1950s.