Release: Antam monthly exploration report for May 2011

(Jakarta, June 10, 2011)--PT. Antam (Persero) Tbk is pleased to announce its exploration report for May 2011 in accordance with the Indonesia Stock Exchange listing rules.

Antam?s exploration activities were focused on nickel, gold, and bauxite in May 2011, with total preliminary cost of Rp14.3 billion.

NICKEL
Nickel exploration activities were conducted in North Maluku, Southeast Sulawesi, and West Papua.

In general, Antam conducted grid measurement, topography measurement, drilling, core logging, and sampling during its nickel exploration activities.

Antam spent Rp6 billion on nickel exploration activities in May 2011.

GOLD
Antam conducted gold exploration activities at West Java, Banten, Jambi, West Sulawesi, and Papua. Antam spent Rp6.8 billion in May 2~1 1 for gold exploration activities.

Exploration activities at Pongkor included, among others, detailed geological mapping (DGM), core logging, detailed mapping structure, drilling as well as geological evaluation and modeling. Antam conducted drilling, core logging, and semi detailed geological mapping (SDGM) at Papandayan.

At Cibaliung, Antam conducted DGM, SDGM, and sampling activities.

Meanwhile, at Batangasai, Jambi, Antam performed DGM, rock, core and soil sampling as well as core logging.

At Mao, Batuisi and Karosa, West Sulawesi, Antam conducted 0GM, rock sampling, track measurement, and geodetic GPOS measurement.

Antam conducted regional geological mapping (RGM), SDGM, and DGM at Oksibil, Papua.

BAUXITE
Antam conducted bauxite exploration activities at Mempawah, Landak, Tayan, and Munggu Pasir, West Kalimantan. Total exploration activities for bauxite amounted to Rpl.5 billion in May 2011.

Antam performed grid measurement, test pitting, and sampling as part of its bauxite exploration activities. (end of release)