ASET EKSPLORASI DAN EVALUASI EXPLORATION AND EVALUATION ASSETS PROPERTI TAMBANG MINING PROPERTIES

KONSOLIDASIAN TIDAK DIAUDIT 31 Maret 2013 dan 31 Desember 2012 dan Tiga bulan yang berakhir pada tanggal-tanggal 31 Maret 2013 dan 2012 Disajikan dalam Dolar Amerika Serikat, kecuali dinyatakan lain PT TOBA BARA SEJAHTRA TBK AND SUBSIDIARIES FINANCIAL STATEMENTS UNAUDITED March 31, 2013 and December 31, 2012 and Three months ended March 31, 2013 and 2012 Expressed in United States Dollar, unless otherwise stated Catatan atas laporan keuangan interim konsolidasian merupakan bagian yang tidak terpisahkan dari laporan keuangan interim konsolidasian secara keseluruhan. The accompanying notes to the interim consolidated financial statements form an integral part of these interim consolidated financial statements. 49 11. ASET EKSPLORASI DAN EVALUASI 11. EXPLORATION AND EVALUATION ASSETS 31 Maret 2013 31 Desember 2012 March 31, 2013 December 31, 2012 Saldo awal 8.897.455 6.306.744 Beginning balance Penambahan 421.959 2.590.711 Additions Saldo akhir 9.319.414 8.897.455 Ending balance 12. PROPERTI TAMBANG 12. MINING PROPERTIES Biaya Tambang pengupasan dalam Tambang tanah konstruksi produksi tangguhan Mine under Producing Deferred Total Construction Mines Stripping cost Total Saldo awal Beginning balance 31 Desember 2011 12.997.703 27.389.015 2.923.016 43.309.734 31 December 2011 Penambahan 1.769.227 6.738.697 20.735.755 29.243.679 Additions Transfer 1.703.469 1.703.469 - - Transfer Dibebankan ke biaya tambang - - 9.409.630 9.409.630 Charged to mining costs 13.063.461 35.831.181 14.249.141 63.143.783 Dikurangi: Less: Akumulasi amortisasi - 5.579.733 - 5.579.733 Accumulated amortization Balance as of Saldo 31 Desember 2012 13.063.461 30.251.448 14.249.141 57.564.050 31 December 2012 Saldo awal Beginning balance 31 Desember 2012 13.063.461 35.831.181 14.249.141 63.143.783 31 December 2012 Penambahan 586.240 157.759 6.084.510 6.828.509 Additions Transfer 13.571 13.571 Transfer Dibebankan ke biaya tambang - - 611.813 611.813 Charged to mining costs 13.636.130 36.002.511 19.721.838 69.360.479 Dikurangi: Less: Akumulasi amortisasi - 6.223.220 - 6.223.220 Accumulated amortization Balance as of Saldo 31 Maret 2013 13.636.130 29.779.291 19.721.838 63.137.259 31 March 2013 Pengelompokkan biaya eksplorasi dan pengembangan tangguhan berdasarkan tahapan kegiatan masing-masing area of interest. Classification of deferred exploration and development expenditures based on activities at the respective area of interests. Pemulihan biaya eksplorasi dan pengembangan tangguhan bergantung pada keberhasilan pengembangan dan eksploitasi komersial atau penjualan area of interest tersebut. Ultimate recovery of deferred exploration and development expenditures is dependent upon successful development and commercial exploitation, or alternatively, sale of the respective area of interest. Pembebanan amortisasi biaya eksplorasi dan pengembangan tangguhan dibebankan sebagai biaya produksi. Amortization of deferred exploration and development expenditures were charged to cost of production. KONSOLIDASIAN TIDAK DIAUDIT 31 Maret 2013 dan 31 Desember 2012 dan Tiga bulan yang berakhir pada tanggal-tanggal 31 Maret 2013 dan 2012 Disajikan dalam Dolar Amerika Serikat, kecuali dinyatakan lain PT TOBA BARA SEJAHTRA TBK AND SUBSIDIARIES FINANCIAL STATEMENTS UNAUDITED March 31, 2013 and December 31, 2012 and Three months ended March 31, 2013 and 2012 Expressed in United States Dollar, unless otherwise stated Catatan atas laporan keuangan interim konsolidasian merupakan bagian yang tidak terpisahkan dari laporan keuangan interim konsolidasian secara keseluruhan. The accompanying notes to the interim consolidated financial statements form an integral part of these interim consolidated financial statements. 50 13. UTANG USAHA 13. TRADE PAYABLES