Consolidated 2011 2010 Note  $ $ Note 15. Plant and Equipment Plant and equipment At cost  3,284,993 1,591,884 Accumulated depreciation  (1,068,461) (984,332) Total plant and equipment, at net book value  2,216,532 607,552 Reconciliation The reconciliation of the carrying amount for plant and equipment is set out below:  Balance at beginning of financial year  607,552 618,562 Additions  22  2,058,646 235,213 Disposals  (114,319) - Depreciation expense  5  (335,347) (246,223) Net carrying amount at end of financial year  2,216,532 607,552 Note 16. Intangible Assets  Computer software At cost  1,144,552 825,904 Accumulated amortisation  (664,511) (470,982) Total intangibles, at net book value  480,041 354,922 Reconciliation The reconciliation of the carrying amounts for computer software is set out below:  Balance at beginning of financial year  354,922 240,689 Additions  22  321,017 283,677 Amortisation expense  5  (195,898) (169,444) Net carrying amount at end of financial year  480,041 354,922 Note 17. Exploration and Evaluation Expenditure Carried Forward  Deferred geological, geophysical, drilling and other exploration and evaluation expenditure, including directly attributable general administrative costs  276,465,002 265,243,372 Reconciliation The reconciliation of exploration and evaluation expenditure carried forward is set out below:  Balance at beginning of financial year  265,243,372 100,235,662 Additions  22  22,242,534 165,145,066 Net foreign currency difference on translation of financial statements of foreign subsidiaries  (7,139,012) (137,356) Exploration and evaluation expenditure written off (refer Note (a) below)  5  (3,881,892) - Total exploration and evaluation expenditure carried forward (refer Note (b) below)  276,465,002 265,243,372 59 Karoon Gas Australia Ltd  Annual Report 2011