e. PT Bhakti Energi Persada 46.9

O UR W OR L D O UR TH O U g HT s O UR B U s IN E s s O UR PE O PL E O UR C O M M U N IT IE s O UR g O v ERN A N C E O UR IN v E s T O R s O UR F INAN C E s OU R B US IN E S S Coal resource quality as at June 30, 2011 Calculated quality changes to Adaro Energys metallurgical coal resources 2012 vs. 2011 Notes Ash adb Volatile matter adb Total sulphur adb Ash adb Volatile matter adb Total sulphur adb 1 Based on BHP Billitons 2012 Annual Report with the permission of BHP Billiton. 4.2 28.5 0.55 - - - - - - 4.7 39.2 0.98 - - - 3.6 18.7 0.72 - - - 3.4 18.8 0.56 - - - 4.5 17.4 0.80 - - - 4.5 27.7 0.49 - - - Calculated as at Dec. 31, 2011 1 Calculated quality changes to Adaro Energy coal resources 2012 vs. 2011 Notes Moisture in the analysis sample adb Ash adb Volatile matter adb Total sulphur adb Calorific value Kcal kg adb Moisture in the analysis sample adb Ash adb Volatile matter adb Total sulphur adb Calorific value Kcal kg adb 1 2011 Adaro Indonesia coal quality estimates are restatements of the quality in Adaro Indonesias 2010 JORC Coal Resources and Reserves statement 2 PT Adaro Indonesias coal quality samples have been analysed to AsTM standards 3 PT Bhakti Energi Persadas coal quality samples have been analysed to AsTM standards 4 PT Mustika Indah Permais coal quality samples have been analysed to IsO standards 5 The Adaro Energy group coal quality was derived by combining the coal quality parameters of the Coal Resources of the component operating companies using weight averaging 6 The Adaro Energy group coal quality was derived by combining the coal quality parameters of the Coal Resources of the component operating companies using weight averaging. 17.6 2.1 41.2 0.11 5,563 1.5 0.1 -0.7 0.01 -127 16.9 3.3 41.0 0.23 5,799 2.2 -0.1 -2.6 0.09 -356 south Paringin was not included in 2011 Resources 19.1 3.8 40.3 0.28 5,278 2.5 - -1.2 0.01 -165 19.3 4 41.4 0.28 5,215 -0.5 0.4 0.2 0.05 47

18.1 2.8

41 0.20 5,466 1.7

0.1 -1.1

0.01 -130

PT Bhakti Persada Energi was not acquired until 2012

22.2 6.5

36.6 0.49

5,114 -0.7 -0.5 0.8 - 53

22.2 6.5

36.6 0.49

5,114 -0.7 -0.5 0.7 -0.01 53

18.1 2.8

41.0 0.20

5,466 1.8

0.2 -1.2

- -126 PT Bhakti Persada Energi was not acquired until 2012 As at Dec. 31, 2011 1 Calculated quality changes to Adaro Energy coal resources 2012 vs. 2011 Notes Total Moisture Ash gar Volatile matter gar Total sulphur gar Calorific Value Kcal kg gar Total moisture Ash gar Volatile matter gar Total sulphur gar Calorific value Kcal kg gar 1 2011 Adaro Indonesia Coal quality estimates are restatements of the quality in PT Adaro Indonesias 2010 JORC Coal Resources and Reserves statement 2 PT Adaro Indonesias coal quality samples have been analysed to AsTM standards 3 PT Bhakti Energi Persadas coal quality samples have been analysed to AsTM standards 4 PT Mustika Indah Permais coal quality samples have been analysed to IsO standards 5 The Adaro Energy group coal quality was derived by combining the coal quality parameters of the coal resources of the component operating companies using weight averaging. 27.1 1.9 36.5 0.10 4,922 0.9 0.1 -0.5 0.01 -79 29.1 2.8 35.0 0.20 4,948 -0.4

0.2 -1.2

0.08 -149 south Paringin was not included in 2011 Resources 38.9 2.9 30.4 0.21 3,986 - - 0.1 0.01 11 43.4 2.8 29.0 0.20 3,658 0.2 0.3 -0.1 0.03 -1

32.2 2.3

33.9 0.15

4,525 0.1

0.1 -0.2

0.01 -11

PT Bhakti Energi Persada was not acquired until 2012

33.9 5.5

31.1 0.42

4,345 0.3 -0.5 0.2 -0.01 -12

33.9 5.5

31.1 0.42

4,345 0.3 -0.5 0.2 -0.01 -12

32.2 2.3

33.9 0.15

4,525 0.2

0.2 -0.4

0.02 -19

PT Bhakti Energi Persada was not acquired until 2012 ADARO ENERgY 2012 ANNUAL REPORT 109