dalam kurung waktu 25 tahun belakangan ini perkembangan pesat telah berlangsung dalam kegiatan eksplorasi-pertambangan di indonesia terutama yang dilakukan oleh perusahaan asing dengan berbagai metode dan peralatan moderen telah bnayak menghasilkan temuan-temuan baru.
the khinhill-otto gold joint venture(K-OG) signed an agreement with the goverment of indonesia (GOI) (by and through the director general of mines (DGM) of the departemen of mines and energy on 22 august 1983 for consulting services on the world bamk (WB) funded study of the coal resources of south sumatera.
the khihil otto gold join venture enterted into an agreement with the goverment of indonesia to rovide engineering and exploration services and to prepare related studies in coal bearing areas in south sumatera under loan number 2153 IND from the international bank for Recontructions and develovement (world bank)