In 1969, the Bauxite Mines Mostar Company merged with Energoinvest Sarajevo to form a new organisation focused on aluminium production. The Government of the Socialist Republic of Bosnia and Herzegovina tasked the group with maximising the potential of the resources in the region and develops a new facility that would turn Mostar into a global aluminium producer. This was achieved by 1975, as an aluminium production began in the new Alumina Factory. The success was based on cooperation between Energoinvest and the French company Pechiney.

The Alumina and Bauxite mines merged to form a new company in 1977, becoming Aluminij, and the blueprint for the company as it is known today. With government control, between 1981 and 1990 the company went through several structural and name changes, reflecting the economic and political situations of the time.

In 1990 Aluminij was separated from Energoinvest, keeping its name that by this time had become a well-recognized brand with a pristine reputation. Since that separation, Aluminij has become the leading aluminium producer of Bosnia and Herzegovina, and a core driver of the economy, providing employment and investment that has shaped life in the Herzegovina, Bosnia and Dalmatian Region.

By the end of 2002, the modernisation phase for Aluminij facilities had been completed at a total cost of 250 million Euros. The modernisation phase brought in new technologies and introduced production upgrades that increased output, efficiency and quality, which allowed Aluminij to remain competitive on the world stage. Today, being part of the M.T. Abraham Group, Aluminij once again becoming a global aluminum leader.