Aneka Tambang (ASX:ATM) reported an unaudited preliminary cost of 45.54 billion Indonesian rupiah for exploration activities during the period ended March 31, focused on gold, nickel, and bauxite, according to a Friday Australian bourse filing.

It conducted underground mine drilling and deep drilling while exploring for gold at Pongkor, West Java in Indonesia, the filing said.

It conducted geological mapping, core logging, core sampling, grid measurement, single tube drilling, and laboratory analysis and preparation while exploring for nickel at the North Konawe and Pomalaa areas in Southeast Sulawesi.

It carried out identification and licenses, geological mapping, and measurement with the installation of measuring stakes and test pit grid traverse measurements at the Tayan and Landak areas in West Kalimantan, while exploring for bauxite.