Bauxite, the raw material for the production of alumina, was first discovered in 1924 at Kijang, Bintan Island, in the province of Riau, in northwestern Indonesia. Bauxite from Bintan Island has been mined and exported since 1935. In 1968 Antam acquired the mine. Thus, Antam is Indonesia’s longest running producer of bauxite. Antam exports the bauxite to alumina producers in Japan and China.

Following the closure of the Kijang bauxite mine in 2009, Antam is currently developing two alumina projects to further add value to its vast bauxite reserves in Kalimantan. More information on Antam’s alumina projects can be found on our Development Project section. As of December 31, 2011, Antam has 106.35 million wmt of bauxite reserves and 267.5 million wmt of resources in Tayan, Mempawah and Munggu Pasir, all are located in Kalimantan.