b'(X US$ 1,000) Land & Lease hold Building and Machine & Abandonment Pipelines Other Fixed Projects in Progress Grand Total Improvement Structure Equipment Costs AssetsCostAt January 1, 20199,774 1,110,003 12,820 4,303 33,249 2,673 5,019 1,177,841 AdjustmentAbandonmentCosts*- - -3,768- - -3,768Additions -771 1,297- - 3219,919 22,019Adjustments- - - - - - - - CapitalizedfromPIPtoPPE-1,298- - - -(1,298)- ExpensetoP&Lincurrentyear- - - - - -(407) (407)At December 31, 20199,774 1,112,072 14,117 8,071 33,249 2,705 23,233 1,203,221 AdjustmentAbandonmentCosts*- - -2,318- - -2,318Additions - 435 141 - - -36,711 37,287Adjustments- -91- - 2 -93CapitalizedfromPIPtoPPE-51,491233 - - -(51,724)- Disposals/Disinvestmentincurrentyear-(1,809)(5)- - (133)-(1,947)Internal transfer- - - - - - - - ExpensetoP&Lincurrentyear- - - - - -(6,695) (6,695)At December 31, 20209,774 1,162,189 14,577 10,389 33,249 2,574 1,525 1,234,277 DepreciationAt January 1, 2019(1,666)(219,572)(11,093)(495)(8,243)(2,122)- (243,191)Depreciation Abandonment Costs*- - -(173)- - -(173)Depreciation current year-(42,729) (874)-(1,239) (108)-(44,950)Depreciation/Disinvestmentincurrentyear- - - - - - - - At December 31, 2019(1,666)(262,301)(11,967)(668)(9,482)(2,230)- (288,314)Adjustments- -(90)- - (4)-(94)Depreciation Abandonment Costs*- - -(337)- - -(337)Depreciation current year-(50,676) (482)-(1,240) (81)-(52,479)Depreciation/Disinvestmentincurrentyear-3615 - - 133 -499ProvisionforImpairment-(9,233)- - - - -(9,233)At December 31, 2020(1,666)(321,849)(12,534)(1,005)(10,722)(2,182)- (349,958)Netbookvalue:At December 31, 20198,108 849,771 2,150 7,403 23,767 475 23,233 914,907 At December 31, 20208,108 840,340 2,043 9,384 22,527 392 1,525 884,319 95'