Release: Antam monthly exploration report for November 2005

Jakarta, December 12, 2005 ? PT Antam Tbk is pleased to lodge the monthly exploration report for November 2005 in accordance with the Jakarta Stock Exchange listing rules. Exploration activities remained focused on Antam?s main commodities of nickel, gold and bauxite. Total cost for exploration in November 2005 reached Rp5.4 billion, 32% higher than the Rp4.1 billion spent in October 2005.

NICKEL
Antam conducted nickel exploration in Halmahera and Southeast Sulawesi while at Obi Island Antam conducted evaluation and final report preparation.

Exploration in Buli, Halmahera included 1,592 meters of drilling at Blok A and Pakal using 25 m x 25 m spacing and for Sangaji using 50 m x 50 m and 100 m x 100 m spacing. The total cost reached Rp2.8 billion.

Antam conducted analyses of the continuation of nickel laterite deposits with final-stage infill drilling, boulder distribution analysis (georadar research on several mining blocks) and final preparations for the Mornopo mine design, for a total cost of Rp105 million.

Antam continued exploration drilling in Southeast Sulawesi at Tapunopaka using spacing of 25 m and at Mandiodo using spacing of 50 m, for a total of 2,215.95 meters at a cost of Rp1.7 billion.

Activities at Obi Island included chemical analysis, evaluation, preparing final report and arranging 25m cross pattern drilling model at a total cost of Rp97.5 million.

Antam conducted initial exploration at Bobaris, South Kalimantan at a cost of Rp14.2 million.

Antam also conducted exploration at Morowali Regency, Central Sulawesi and applied for a new mining license at this location. The total cost reached Rp29.8 million.

The total cost for nickel exploration reached Rp4.8 billion.

GOLD
Antam was in the final report phase at Karossa, West Sulawesi; Baturape, South Sulawesi; Toliwang, West Halmahera and Cariu, Bogor and spent Rp53.5 million.

Geological results prompted Antam to apply for new mining licenses at Tauro (Toliwang Area), West Halmahera and Karossa, West Sulawesi.

Further exploration activities at Seblat, Bengkulu specifically Gunung Husin and Lebong Kandis prospects included regional geological mapping of 1,000 ha, semi-detailed geological mapping of 475 ha and detailed geological mapping of 60 ha, a 180m3 shallow ground clearing and analyzed 29 samples with a total cost of Rp71.4 million.

At Pongkor gold mine, Antam conducted detailed geological mapping of 20 ha and analyzed 184 samples with a total cost of Rp85.5 million. Antam targeted exploration areas of Kubang Cicau below L-500, Nirmala, Cirabok, Malasari and Legok Heulang block. Antam also conducted a 135 m geological study and 60 times of permeability testing at a total cost of Rp62.8 million.

Further exploration conducted at Bulado, Gorontalo and Patah Tiga Mountain, Jambi including permit processing and socialization at total cost of Rp2 million.

Gold exploration at Cikotok, Banten continued in cooperation with a third party. It completed 1 drilling pit of 300.10 m at Cisadan prospect. All costs were borne by the third party.

Office expenditures inline with exploration activities amounted to Rp60.6 million.

The total cost of gold exploration reached Rp335.8 million.

BAUXITE

Bauxite exploration at Wacopek, Kijang included grid measurements of 6.975 km, test pitting of 179.30 m (82 pits), 67 samples, preparation analysis of 57 samples and arrangements for further activities at 8 knolls surrounding Wacopek at a total cost of Rp49.3 million.

Antam test pitting activities at Tayan used 25m spacing. Activities included a grid measurement of 9.92 kilometers, test pitting of 1,105 meters, preparation analysis of 523 samples and mine design. The total cost amounted to Rp220.6 million, including Rp55 million for mine design.

The total cost of bauxite exploration reached Rp269.9 million. (end of release)