PT Duta Pertiwi Nusantara Tbk (the Company) was established based on the Notarial Deed No. 45 of Irwan Sutjiono, S.H., dated March 18, 1982, notary in Jakarta. After obtaining the necessary approvals, construction began in 1984 and it finally commenced its operations in January 1987, after trial run had been carried out in the fourth quarter of 1986.