Iranian Mines & Mining Industries Development & Renovation, known as IMIDRO, is a major state-owned holding company active in the mining sector in Iran. IMIDRO has 8 major companies and 55 operational subsidiaries active in steel, aluminium, copper, cement and mineral exploitation fields.In 2002 IMIDRO and its subsidiaries had 49.3 thousand employees with a total asset value of 33.5 thousand billion Rials.