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| | Jun.2004 | Jun.2005 | Jun.2006 |
| Table 84. VALUE OF DEMONSTRATED SUBSOIL ASSETS, By commodity | | | |
| - as at 30 June(a) | | | |
|
ANTIMONY |
|
|
|
| Economic demonstrated resource(Kt)(b) | 86.5 | 93 | 93 |
| 5 year lagged moving average of prices at 30 June($/t) | 3218.4 | 3635.5 | 4420.3 |
| Cost including normal return on capital($/t)(c) | 0 | 0 | 0 |
| Annual production(Kt) | 0 | 0 | 0 |
| 5 year lagged moving average of production(Kt) | 1.2 | .9 | .5 |
| 5 year lagged moving average of resource life(Years) | 74.7 | 108.6 | 180.2 |
| Net present value of assets($m)(d) | 55 | 46 | 33 |
| BAUXITE | | | |
| Economic demonstrated resource(Gt)(b) | 5.8 | 5.8 | 5.8 |
| 5 year lagged moving average of prices at 30 June($/t) | 36.7 | 35.7 | 34.1 |
| Cost including normal return on capital($/t)(c) | 31.2 | 32.2 | 30.7 |
| Annual production(Gt) | .1 | .1 | .1 |
| 5 year lagged moving average of production(Gt) | .1 | .1 | .1 |
| 5 year lagged moving average of resource life(Years) | 106.3 | 104.7 | 101.5 |
| Net present value of assets($m)(d) | 4434 | 2908 | 2796 |
| BLACK COAL-RECOVERABLE | | | |
| Economic demonstrated resource(Gt)(b) | 39.8 | 39.2 | 39.4 |
| 5 year lagged moving average of prices at 30 June($/t) | 57.3 | 63.9 | 71.5 |
| Cost including normal return on capital($/t)(c) | 45.9 | 51.1 | 57.2 |
| Annual production(Gt) | .3 | .3 | .4 |
| 5 year lagged moving average of production(Gt) | .3 | .3 | .3 |
| 5 year lagged moving average of resource life(Years) | 149.7 | 140.5 | 128.3 |
| Net present value of assets($m)(d) | 45435 | 52431 | 63612 |
| BROWN COAL-RECOVERABLE | | | |
| Economic demonstrated resource(Gt)(b) | 37.5 | 37.4 | 37.4 |
| 5 year lagged moving average of prices at 30 June($/t) | 7.1 | 7.1 | 7.1 |
| Cost including normal return on capital($/t)(c) | 6.4 | 6.4 | 6.3 |
| Annual production(Gt) | .1 | .1 | .1 |
| 5 year lagged moving average of production(Gt) | .1 | .1 | .1 |
| 5 year lagged moving average of resource life(Years) | 556.7 | 548.5 | 544.5 |
| Net present value of assets($m)(d) | 707 | 708 | 701 |
| CADMIUM | | | |
| Economic demonstrated resource(Kt)(b) | 64.2 | 62.9 | 62.9 |
| 5 year lagged moving average of prices at 30 June($/t) | 1231.4 | 1980.5 | 2605.1 |
| Cost including normal return on capital($/t)(c) | 615.7 | 990.3 | 1302.5 |
| Annual production(Kt) | .4 | .5 | .5 |
| 5 year lagged moving average of production(Kt) | .4 | .4 | .4 |
| 5 year lagged moving average of resource life(Years) | 155.1 | 155.7 | 156.5 |
| Net present value of assets($m)(d) | 4 | 6 | 8 |
| COBALT | | | |
| Economic demonstrated resource(Kt)(b) | 1341.5 | 1430 | 1414.5 |
| 5 year lagged moving average of prices at 30 June($/t) | 48284.5 | 46205.7 | 46464.8 |
| Cost including normal return on capital($/t)(c) | 33799.2 | 32344 | 32525.4 |
| Annual production(Kt) | 4.6 | 4.6 | 4.1 |
| 5 year lagged moving average of production(Kt) | 4 | 4.4 | 4.6 |
| 5 year lagged moving average of resource life(Years) | 338.3 | 321.8 | 309 |
| Net present value of assets($m)(d) | 856 | 906 | 925 |
| COPPER | | | |
| Economic demonstrated resource(Mt)(b) | 41.9 | 41.6 | 41.9 |
| 5 year lagged moving average of prices at 30 June($/t) | 3099.4 | 3418.8 | 4835.4 |
| Cost including normal return on capital($/t)(c) | 1347.2 | 1505.8 | 1546.2 |
| Annual production(Mt) | .8 | .9 | .9 |
| 5 year lagged moving average of production(Mt) | .8 | .9 | .9 |
| 5 year lagged moving average of resource life(Years) | 49.5 | 47.7 | 47.7 |
| Net present value of assets($m)(d) | 21217 | 23422 | 40168 |
| DIAMONDS | | | |
| Economic demonstrated resource(Mc)(b) | 119.1 | 129.2 | 121.8 |
| 5 year lagged moving average of prices at 30 June($/c) | 21.1 | 21 | 20.7 |
| Cost including normal return on capital($/c)(c) | 14 | 14.7 | 14.5 |
| Annual production(Mc) | 24.3 | 32.5 | 30.6 |
| 5 year lagged moving average of production(Mc) | 27.8 | 28.4 | 30 |
| 5 year lagged moving average of resource life(Years) | 4.3 | 4.6 | 4.1 |
| Net present value of assets($m)(d) | 717 | 679 | 639 |
| GOLD | | | |
| Economic demonstrated resource(t)(b) | 5407 | 5225 | 5352.5 |
| 5 year lagged moving average of prices at 30 June($/Kg) | 16917.1 | 17556.9 | 19430.7 |
| Cost including normal return on capital($/Kg)(c) | 15007 | 14553.4 | 15236 |
| Annual production(t) | 267 | 266 | 263 |
| 5 year lagged moving average of production(t) | 281.5 | 275 | 267.7 |
| 5 year lagged moving average of resource life(Years) | 19.2 | 19 | 20 |
| Net present value of assets($m)(d) | 5711 | 8667 | 11988 |
| IRON ORE | | | |
| Economic demonstrated resource(Gt)(b) | 15.5 | 16.4 | 17.5 |
| 5 year lagged moving average of prices at 30 June($/t) | 29.9 | 34.8 | 40.3 |
| Cost including normal return on capital($/t)(c) | 23.9 | 27.8 | 32.3 |
| Annual production(Gt) | .2 | .3 | .3 |
| 5 year lagged moving average of production(Gt) | .2 | .2 | .2 |
| 5 year lagged moving average of resource life(Years) | 82.4 | 79.4 | 78.2 |
| Net present value of assets($m)(d) | 16702 | 21013 | 26025 |
| LEAD | | | |
| Economic demonstrated resource(Mt)(b) | 23.4 | 23.8 | 23.7 |
| 5 year lagged moving average of prices at 30 June($/t) | 917.7 | 1003.3 | 1056.1 |
| Cost including normal return on capital($/t)(c) | 684.9 | 748.7 | 890 |
| Annual production(Mt) | .7 | .7 | .8 |
| 5 year lagged moving average of production(Mt) | .7 | .7 | .7 |
| 5 year lagged moving average of resource life(Years) | 33.5 | 33.8 | 33.2 |
| Net present value of assets($m)(d) | 2145 | 2352 | 1529 |
| LITHIUM | | | |
| Economic demonstrated resource(Kt)(b) | 170 | 170 | 170 |
| 5 year lagged moving average of prices at 30 June($/t) | 4818.9 | 4224.6 | 4037.3 |
| Cost including normal return on capital($/t)(c) | 3709.6 | 3379.7 | 3229.8 |
| Annual production(Kt) | 2.1 | .6 | 0 |
| 5 year lagged moving average of production(Kt) | 2.5 | 2.2 | 1.8 |
| 5 year lagged moving average of resource life(Years) | 66.8 | 77.6 | 92.6 |
| Net present value of assets($m)(d) | 41 | 27 | 21 |
| MAGNESITE | | | |
| Economic demonstrated resource(Mt)(b) | 344 | 344 | 344 |
| 5 year lagged moving average of prices at 30 June($/t) | 209.7 | 172.8 | 173.8 |
| Cost including normal return on capital($/t)(c) | 22 | 19.8 | 22 |
| Annual production(Mt) | .6 | .6 | .3 |
| 5 year lagged moving average of production(Mt) | .5 | .5 | .5 |
| 5 year lagged moving average of resource life(Years) | 720.7 | 653.6 | 683.1 |
| Net present value of assets($m)(d) | 1335 | 1185 | 1108 |
| MINERAL SANDS-ILMENITE | | | |
| Economic demonstrated resource(Mt)(b) | 215.6 | 214.5 | 216.7 |
| 5 year lagged moving average of prices at 30 June($/t) | 138.2 | 129 | 115.6 |
| Cost including normal return on capital($/t)(c) | 96.7 | 90.3 | 80.9 |
| Annual production(Mt) | 1.9 | 2 | 2 |
| 5 year lagged moving average of production(Mt) | 2 | 2 | 2 |
| 5 year lagged moving average of resource life(Years) | 107.3 | 108.1 | 110.2 |
| Net present value of assets($m)(d) | 1240 | 1128 | 988 |
| MINERAL SANDS-RUTILE | | | |
| Economic demonstrated resource(Mt)(b) | 20.4 | 20.5 | 21.1 |
| 5 year lagged moving average of prices at 30 June($/t) | 836.4 | 846.5 | 833.7 |
| Cost including normal return on capital($/t)(c) | 501.8 | 507.9 | 500.2 |
| Annual production(Mt) | .2 | .2 | .2 |
| 5 year lagged moving average of production(Mt) | .2 | .2 | .2 |
| 5 year lagged moving average of resource life(Years) | 105.5 | 107.7 | 114.4 |
| Net present value of assets($m)(d) | 960 | 947 | 891 |
| MINERAL SANDS-ZIRCON | | | |
| Economic demonstrated resource(Mt)(b) | 31.5 | 32.9 | 33.4 |
| 5 year lagged moving average of prices at 30 June($/t) | 741.3 | 815.1 | 885.2 |
| Cost including normal return on capital($/t)(c) | 444.8 | 489.1 | 531.1 |
| Annual production(Mt) | .4 | .4 | .4 |
| 5 year lagged moving average of production(Mt) | .4 | .4 | .4 |
| 5 year lagged moving average of resource life(Years) | 76.9 | 78.1 | 77 |
| Net present value of assets($m)(d) | 1794 | 2007 | 2214 |
| NICKEL | | | |
| Economic demonstrated resource(Mt)(b) | 23.3 | 23.9 | 23.8 |
| 5 year lagged moving average of prices at 30 June($/t) | 14118.4 | 14793.5 | 18199 |
| Cost including normal return on capital($/t)(c) | 8471 | 8876.1 | 10919.4 |
| Annual production(Mt) | .2 | .2 | .2 |
| 5 year lagged moving average of production(Mt) | .2 | .2 | .2 |
| 5 year lagged moving average of resource life(Years) | 124.1 | 120.8 | 121.3 |
| Net present value of assets($m)(d) | 15761 | 17207 | 20693 |
| PETROLEUM (RECOVERABLE)-CRUDE OIL | | | |
| Economic demonstrated resource(Gl)(b) | 156.8 | 157 | 157 |
| 5 year lagged moving average of prices at 30 June($/Kl | 299.5 | 337.4 | 399.7 |
| Cost including normal return on capital($/Kl)(c) | 119.8 | 135 | 159.9 |
| Annual production(Gl) | 20.6 | 18.9 | 19 |
| 5 year lagged moving average of production(Gl) | 28 | 24.8 | 22.4 |
| 5 year lagged moving average of resource life(Years) | 5.6 | 6.7 | 7.9 |
| Net present value of assets($m)(d) | 22854 | 26134 | 31891 |
| PETROLEUM-NATURAL GAS | | | |
| Economic demonstrated resource(b m3)(b) | 2567 | 2587 | 2587 |
| 5 year lagged moving average of prices at 30 June($/'000 m3) | 199.1 | 207.2 | 222 |
| Cost including normal return on capital($/'000 m3)(c) | 79.6 | 82.9 | 99.9 |
| Annual production(b m3) | 39.6 | 37.3 | 38.9 |
| 5 year lagged moving average of production(b m3) | 36.2 | 36.8 | 37.6 |
| 5 year lagged moving average of resource life(Years) | 70.9 | 67.6 | 62.6 |
| Net present value of assets($m)(d) | 63801 | 66530 | 65486 |
| PETROLEUM-CONDENSATE | | | |
| Economic demonstrated resource(Gl)(b) | 288.5 | 301 | 307.8 |
| 5 year lagged moving average of prices at 30 June($/Kl) | 317.1 | 346.4 | 399 |
| Cost including normal return on capital($/Kl)(c) | 158.5 | 173.2 | 199.5 |
| Annual production(Gl) | 7.8 | 7.2 | 8.2 |
| 5 year lagged moving average of production(Gl) | 7.9 | 7.9 | 8 |
| 5 year lagged moving average of resource life(Years) | 36.4 | 33.9 | 28.1 |
| Net present value of assets($m)(d) | 16952 | 17912 | 19632 |
| LPG NATURALLY OCCURING | | | |
| Economic demonstrated resource(Gl)(b) | 206.5 | 214 | 214 |
| 5 year lagged moving average of prices at 30 June($/'000 m3) | 242.7 | 249.8 | 274.3 |
| Cost including normal return on capital($/'000 m3)(c) | 121.3 | 124.9 | 137.2 |
| Annual production(Gl) | 5.9 | 4.6 | 4.7 |
| 5 year lagged moving average of production(Gl) | 6.1 | 5.9 | 5.7 |
| 5 year lagged moving average of resource life(Years) | 34.1 | 35.2 | 35 |
| Net present value of assets($m)(d) | 9757 | 9713 | 10217 |
| PLATINUM GROUP (T,PT,PD) | | | |
| Economic demonstrated resource(t)(b) | 18.8 | 19 | 19.5 |
| 5 year lagged moving average of prices at 30 June($/Kg) | 32005.3 | 33421.1 | 37196.1 |
| Cost including normal return on capital($/Kg)(c) | 22403.7 | 23394.8 | 26037.3 |
| Annual production(t) | 1 | .9 | .7 |
| 5 year lagged moving average of production(t) | .9 | .9 | .9 |
| 5 year lagged moving average of resource life(Years) | 20.1 | 20.7 | 22.9 |
| Net present value of assets($m)(d) | 97 | 101 | 108 |
| RARE EARTHS (REO,Y203) | | | |
| Economic demonstrated resource(Kt)(b) | 500 | 500 | 500 |
| 5 year lagged moving average of prices at 30 June($/t) | 0 | 0 | 0 |
| Cost including normal return on capital($/t)(c) | 0 | 0 | 0 |
| Annual production(Kt) | 0 | 0 | 0 |
| 5 year lagged moving average of production(Kt) | 0 | 0 | 0 |
| 5 year lagged moving average of resource life(Years) | 0 | 0 | 0 |
| Net present value of assets($m)(d) | 0 | 0 | 0 |
| SILVER | | | |
| Economic demonstrated resource(Kt)(b) | 42.7 | 44 | 44.8 |
| 5 year lagged moving average of prices at 30 June($/Kg) | 274.9 | 278.2 | 321.7 |
| Cost including normal return on capital($/Kg)(c) | 247.4 | 250.4 | 289.5 |
| Annual production(Kt) | 2.1 | 2.3 | 2.4 |
| 5 year lagged moving average of production(Kt) | 2 | 2.1 | 2.2 |
| 5 year lagged moving average of resource life(Years) | 21.4 | 21.2 | 20.8 |
| Net present value of assets($m)(d) | 614 | 639 | 754 |
| TIN | | | |
| Economic demonstrated resource(Kt)(b) | 163 | 163 | 205 |
| 5 year lagged moving average of prices at 30 June($/t) | 8554.8 | 8845.3 | 9102.9 |
| Cost including normal return on capital($/t)(c) | 5988.4 | 6191.7 | 6372 |
| Annual production(Kt) | 1.5 | 2.1 | 2.8 |
| 5 year lagged moving average of production(Kt) | 7.1 | 5.6 | 4.2 |
| 5 year lagged moving average of resource life(Years) | 22.9 | 29.2 | 49.3 |
| Net present value of assets($m)(d) | 211 | 186 | 158 |
| URANIUM | | | |
| Economic demonstrated resource(Kt)(b) | 708.5 | 716 | 715 |
| 5 year lagged moving average of prices at 30 June($/Kg) | 45.8 | 46.3 | 49.3 |
| Cost including normal return on capital($/Kg)(c) | 32 | 32.4 | 34.5 |
| Annual production(Kt) | 9.6 | 11 | 9.5 |
| 5 year lagged moving average of production(Kt) | 8.9 | 9.5 | 9.4 |
| 5 year lagged moving average of resource life(Years) | 79.6 | 75.7 | 75.7 |
| Net present value of assets($m)(d) | 1811 | 1919 | 2012 |
| ZINC | | | |
| Economic demonstrated resource(Mt)(b) | 41.4 | 41.8 | 41.2 |
| 5 year lagged moving average of prices at 30 June($/t) | 1637.8 | 1552.4 | 2037.9 |
| Cost including normal return on capital($/t)(c) | 1474 | 1397.2 | 1834.1 |
| Annual production(Mt) | 1.4 | 1.4 | 1.4 |
| 5 year lagged moving average of production(Mt) | 1.4 | 1.4 | 1.4 |
| 5 year lagged moving average of resource life(Years) | 29.1 | 29 | 29 |
| Net present value of assets($m)(d) | 2949 | 2803 | 3586 |
| TOTAL | | | |
| Net present value of assets($m)(d) | 238162 | 261573 | 308183 |
n.r. not recorded |
|
|
|
| (a) Experimental estimates. | | | |
| (b) Refers to that part of demonstrated resources for which extraction is expected to be profitable over the life of the mine given current prices and costs. | | | |
| (c) Cost of extraction. | | | |
| (d) See Explanatory Notes, paragraph 8. | | | |
|
