14. Property, Plant and Equipment (i)  The carrying value of mineral-bearing land included in the land and buildings category above amounted to €1,918 million at the balance sheet date  (2011: €2,087 million). (ii) The impairment charge for 2012 of €25 million (2011: €16 million) represents charges across a number of business units in the Group, none of which is  individually material. Land and buildings  (i) Plant and machinery Assets in  course of  construction Total €m €m €m €m At 31 December 2012 Cost/deemed cost  6,188   8,976   290   15,454  Accumulated depreciation (and impairment charges) (1,587) (5,419)  - (7,006) Net carrying amount  4,601   3,557   290   8,448  At 1 January 2012, net carrying amount  4,785   3,535   616   8,936  Translation adjustment (34) (28)  1  (61) Reclassifications   31   356  (387)  - Additions at cost   76   415   84   575  Arising on acquisition (note 31)  156   97   1   254  Disposals at net carrying amount (265) (218) (25) (508) Depreciation charge for year (140) (583)  - (723) Impairment charge for year (ii) (8) (17)  - (25) At 31 December 2012, net carrying amount  4,601   3,557   290   8,448  The equivalent disclosure for the prior year is as follows: At 31 December 2011 Cost/deemed cost  6,372   8,773   616   15,761  Accumulated depreciation (and impairment charges) (1,587) (5,238)  - (6,825) Net carrying amount  4,785   3,535   616   8,936  At 1 January 2011, net carrying amount  4,775   3,591   526   8,892  Translation adjustment  45   28   -  73  Reclassifications   51   86  (137)  - Additions at cost   64   284   228   576  Arising on acquisition (note 31)  140   199   -  339  Disposals at net carrying amount (129) (72) (1) (202) Depreciation charge for year (153) (573)  - (726) Impairment charge for year (ii) (8) (8)  - (16) At 31 December 2011, net carrying amount  4,785   3,535   616   8,936  At 1 January 2011 Cost/deemed cost  6,170   8,446   526   15,142  Accumulated depreciation (1,395) (4,855)  - (6,250) Net carrying amount  4,775   3,591   526   8,892  2012 2011 €m €m Contracted for but not provided in the financial statements  183  198 Authorised by the Directors but not contracted for  83  183 Future purchase commitments for property, plant and equipment CRH 93