A mining area of andesite (basalt) located in Rengasjejer village, Cigudeg district, Bogor regency, West Java province covering 20 hectares land parcel currently in exploration stage. Drilling results in the area of 5ha indicates approximate of 14 million cubic meters reserves.
A mining area of andesite (basalt) located in Sumur village, Ketapang district, Lampung province covering 30 hectares land area currently in exploration stage. Drilling results indicates approximate of 11 million cubic meters reserves.
A mining area of bauxite reserve in exploration and exploitation stage concentrated in Tayan, West Kalimantan. Commercial operation has started since 2007 and mainly exported its product to reﬁnery oﬀtaker in China. In September 2012 Indonusa has signed a deal to develop alumina reﬁnery in Indonesia with Chinese Aluminum Corp. of China Ltd., (Chalco), China’s largest alumina and primary aluminum producer and the world’s second largest alumina producer.