 By 1933 the plant was producing steel.MMK played an important role in the Soviet victory over Nazi Germany, being the largest steel company in the Soviet Union, and also geographically the most distant from the fighting.The strategic concept of developing various huge modern iron and steel works deep inside the country relied on the idea that future defense of the socialist homeland was going to require both huge amounts of steel and places to produce iron and steel that were as safe as possible from foreign invasion and aerial bombing raids.