8. Tangible Capital Assets

(In thousands of dollars)

Cost Accumulated amortization
Capital asset class Opening balance Acquisi-tions Adjustments (1) Disposals and write-offs Closing balance Opening balance Amortiz-ation Adjustments (1) Disposals and write-offs Closing balance 2012 Net book value 2011 Net book value
Land $3,331 $ - $ - $ - $3,331 $ - $ - $ - $ - $ - $3,331 $3,331
Buildings 277,327 1,664 6,297 37 285,251 183,943 10,121 - 6 194,058 91,193 93,384
Machinery and equipment 83,626 4,190 14 751 87,079 36,330 5,620 (1) 471 41,478 45,601 47,296
Computer equipment and software 65,847 2,580 (6,900) 1,284 60,243 41,559 6,812 (10,952) 1,445 35,974 24,269 24,288
Vehicles 39,246 1,017 - 3,357 36,906 25,729 4,008 - 3,280 26,457 10,449 13,517
Assets under construction 23,945 4,264 (15,524) 60 12,625 - - - - - 12,625 23,945
Leasehold improvements 47,482 755 241 - 48,478 20,309 11,079 - - 31,388 17,090 27,173
Total $540,804 $14,470 $(15,872) $5,489 $533,913 $307,870 $37,640 $(10,953) $5,202 $329,355 $204,558 $232,934

(1) Adjustments include assets under construction of $15,524,000 that were transferred to the other categories upon completion of the assets.

Effective November 15, 2011, the Agency transferred computer equipment and software with a net book value of $ 4,919,000 for an acquisition cost of $15,872,000 and accumulated amortization of $10,953,000 to Shared Services Canada. This transfer is included in the adjustments columns (Note 12).

Amortization expense for the year ended March 31, 2012 is $37,640,000 (2011 - $31,550,000).