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Antam is a vertically integrated, export-oriented, diversified mining and metals company. With operations spread throughout the mineral-rich Indonesian archipelago, Antam undertakes all activities from exploration, excavation, processing through to marketing of nickel ore, ferronickel, gold, silver, and bauxite. The company has long term loyal blue chip customers in Europe and Asia. Due to the vastness of the company's licensed exploration areas as well as its known large holdings of high quality reserves and resources, Antam has formed several joint ventures with international partners to profitably develop geological ore bodies into profitable mines.

Nickel Ore Mining

Nickel ore is one of Antamís important products. Antam produces and exports high grade nickel ore with a minimum 1.8% nickel content and a maximum 25% iron content (saprolite) and low grade nickel ore with a 1.2% minimum nickel content (limonite) and minimum 25% iron content.

Antam has approximately 447.7 million wet metric tons (wmt) of saprolite and 498.8 million wmt of limonite reserves and resources which could last for many decades at current extraction rates. While Antam has more than enough ore to support its current long term nickel expansion plans, in order to prolong the life of its own reserves, Antam may seek third party ores to supplement its own supply.

Antamís nickel ore mines are at Pomalaa, Gee, Tanjung Buli and Tapunopaka. Pomalaa, Southeast Sulawesi, is Antamís oldest nickel mine and is nearly depleted. Tapunopaka is Antamís newest mine, located in Southeast Sulawesi. Gee and Tanjung Buli are located in North Maluku.

Gold Mining

Antamís main gold and silver production is sourced from its gold mine at Pongkor, West Java. Indications of gold deposits at Pongkor were discovered by Antamís Geology Unit in 1981, and production commenced in May 1994 after Antam secured the mining license in 1992.

The Pongkor mine has three primary veins of gold: Ciguha, Kubang Cicau and Ciurug. A conventional cut and fill stoping mining method is used for the first two of these veins. A mechanised cut and fill method, with hydraulic jumbo drill and load haul dump (LHD), was introduced in 2000 for the third vein, Ciurug. The use of mechanised cut and fill is intended not only to assist in meeting the increased production targets but also to lower overall production costs and to improve efficiency. Antam expects mine life of Pongkor until 2019 with current gold reserves and resources amount to 1.1 million oz.


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 Indonesiaís 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 Antamís alumina projects can be found on our Development Project section. Antam has around 347.2 million wmt of bauxite reserves and resources in Tayan, Mempawah and Munggu Pasir, all are located in Kalimantan.

Mine For

nickel, gold, bauxite

Location of operation(s)



Jl Letjen TB Simatupang 1, Lingkar Selatan


+62 21 780 5119



Last Updated



The data on Australian is intended as a guide only and is provided purely as an indication of what information can be found through official announcements. Data on this website should not be used to make an investment or trading decision. All information should be carefully cross-checked against official sources for accuracy. The publisher (Intaanetto Pty Ltd) will not be held liable for any loss arising from the use of this website.