BIAYA EKSPLORASI DAN PENGEMBANGAN TANGGUHAN lanjutan DEFERRED EXPLORATION

341 Penawaran Umum Perdana Saham – PT Toba Bara Sejahtra Tbk PT TOBA BARA SEJAHTRA DAN ENTITAS ANAK CATATAN ATAS LAPORAN KEUANGAN KONSOLIDASIAN Tahun yang Berakhir pada Tanggal-tanggal 31 Desember 2011, 2010 dan 2009 dan 1 Januari 200931 Desember 2008 Disajikan dalam ribuan Rupiah, kecuali dinyatakan lain PT TOBA BARA SEJAHTRA AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS Years Ended December 31, 2011, 2010 and 2009 and January 1, 2009December 31, 2008 Expressed in thousands of Rupiah, unless otherwise stated

13. BIAYA EKSPLORASI DAN PENGEMBANGAN TANGGUHAN lanjutan

13. DEFERRED EXPLORATION

AND DEVELOPMENT EXPENDITURES continued Mutasi biaya eksplorasi dan pengembangan tangguhan selama masing-masing periode pelaporan adalah sebagai berikut: The movement of deferred exploration and development expenditures during the respective reporting period were as follows: 2011 Saldo Awal Saldo Akhir Beginning Penambahan Pengurangan Reklasifikasi Ending Balance Additions Deduction Reclassification Balance Harga perolehan Acquisition costs Tambang produksi 97.763.117 59.875.198 - 97.045.408 254.683.723 Producing mines Pengembangan dan Development and konstruksi 39.104.664 6.315.990 - - 45.420.654 construction Eksplorasi 164.156.319 66.238.153 - 97.045.408 133.349.064 Exploration 301.024.100 132.429.341 - - 433.453.441 Akumulasi penyusutan Accumulated depreciation Tambang produksi 22.558.035 10.127.865 - - 32.685.900 Producing mines 22.558.035 10.127.865 - - 32.685.900 Nilai buku neto 278.466.065 400.767.541 Net book value 2010 Saldo Awal Saldo Akhir Beginning Penambahan Pengurangan Reklasifikasi Ending Balance Additions Deduction Reclassification Balance Harga perolehan Acquisition costs Tambang produksi 75.469.814 22.293.303 - - 97.763.117 Producing mines Pengembangan dan Development and konstruksi 5.617.949 33.486.715 - - 39.104.664 construction Eksplorasi 118.723.204 45.433.115 - - 164.156.319 Exploration 199.810.967 101.213.133 - - 301.024.100 Akumulasi penyusutan Accumulated depreciation Tambang produksi 11.548.380 11.009.655 - - 22.558.035 Producing mines 11.548.380 11.009.655 - - 22.558.035 Nilai buku neto 188.262.587 278.466.065 Net book value 342 Penawaran Umum Perdana Saham – PT Toba Bara Sejahtra Tbk PT TOBA BARA SEJAHTRA DAN ENTITAS ANAK CATATAN ATAS LAPORAN KEUANGAN KONSOLIDASIAN Tahun yang Berakhir pada Tanggal-tanggal 31 Desember 2011, 2010 dan 2009 dan 1 Januari 200931 Desember 2008 Disajikan dalam ribuan Rupiah, kecuali dinyatakan lain PT TOBA BARA SEJAHTRA AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS Years Ended December 31, 2011, 2010 and 2009 and January 1, 2009December 31, 2008 Expressed in thousands of Rupiah, unless otherwise stated 13. BIAYA EKSPLORASI DAN PENGEMBANGAN TANGGUHAN lanjutan 13. DEFERRED EXPLORATION AND DEVELOPMENT EXPENDITURES continued Mutasi biaya eksplorasi dan pengembangan tangguhan selama masing-masing periode pelaporan adalah sebagai berikut: The movement of deferred exploration and development expenditures during the respective reporting period were as follows: 2009 - Disajikan Kembali Catatan 4 2009 - As Restated Note 4 Saldo Awal Saldo Akhir Beginning Penambahan Pengurangan Reklasifikasi Ending Balance Additions Deduction Reclassification Balance Harga perolehan Acquisition costs Tambang produksi 85.520.633 14.336.147 24.386.966 - 75.469.814 Producing mines Pengembangan dan Development and konstruksi 785.873 4.832.076 - - 5.617.949 construction Eksplorasi 68.686.781 50.036.423 - - 118.723.204 Exploration 154.993.287 69.204.646 24.386.966 - 199.810.967 Akumulasi penyusutan Accumulated depreciation Tambang produksi 5.419.961 7.153.480 - 1.025.061 11.548.380 Producing mines 5.419.961 7.153.480 - 1.025.061 11.548.380 Nilai buku neto 149.573.326 188.262.587 Net book value Berikut ini adalah rincian biaya eksplorasi dan pengembangan tangguhan masing-masing entitas anak berdasarkan aktivitasnya: The analysis of deferred exploration and development expenditures by subsidiaries is as follows: Disajikan Kembali As Restated Catatan 2 Catatan 2 dan 4 Note 2 Notes 2 and 4 1 Jan. 2009 31 Des. 2008 Jan. 1, 2009 2011 2010 2009 Dec. 31, 2008 Tahap produksi Production stage ABN 127.264.975 29.059.226 20.223.760 12.815.024 ABN TBEIM 66.915.057 46.145.856 43.697.674 67.285.648 TBEIM TMU 27.817.790 - - - TMU Sub-total 221.997.822 75.205.082 63.921.434 80.100.672 Sub-total Tahap pengembangan Development and dan konstruksi construction stage TMU 45.420.654 39.104.664 5.617.949 785.873 TMU Sub-total 45.420.654 39.104.664 5.617.949 785.873 Sub-total Tahap eksplorasi Exploration stage ABN 91.454.498 159.914.191 117.419.454 68.498.160 ABN TMU 41.894.566 4.242.128 1.303.750 188.621 TMU Sub-total 133.349.064 164.156.319 118.723.204 68.686.781 Sub-total Total 400.767.540 278.466.065 188.262.587 149.573.326 Total Termasuk pengurangan sehubungan dengan pelepasan entitas anak KE. Including deduction in relation to disposal of a subsidiary KE. 343 Penawaran Umum Perdana Saham – PT Toba Bara Sejahtra Tbk PT TOBA BARA SEJAHTRA DAN ENTITAS ANAK CATATAN ATAS LAPORAN KEUANGAN KONSOLIDASIAN Tahun yang Berakhir pada Tanggal-tanggal 31 Desember 2011, 2010 dan 2009 dan 1 Januari 200931 Desember 2008 Disajikan dalam ribuan Rupiah, kecuali dinyatakan lain PT TOBA BARA SEJAHTRA AND SUBSIDIARIES NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS Years Ended December 31, 2011, 2010 and 2009 and January 1, 2009December 31, 2008 Expressed in thousands of Rupiah, unless otherwise stated

13. BIAYA EKSPLORASI DAN PENGEMBANGAN TANGGUHAN lanjutan