All of Australia's mineral resources are finite and iron will start to be depleted in ~20 years at the current rate of extraction.
Australians may eventually have to evolve and jump off the miner's back onto the sheep's back again.
There's no sign that any politicians are planning what will happen to the economy when mineral resources are depleted.
Perhaps miners should already be under training as baristas to ensure their future.
https://www.ga.gov.au/digital-publication/aimr2020/australias-estimated-ore-rese... Quote: Table 1. Australia's Ore Reserves and Mineral Resources of selected commodities at operating mines in 2019.
Commodity Unit No. of Operating Mines1 Ore Reserves2 Measured and Indicated Mineral Resources3 Inferred Mineral Resources4 Mine Production5 Reserve Life (years) Resource Life 1 (years) Resource Life 2 (years)
Antimony kt Sb 1 17.7 36.8 9.1 2.036 9 23 27
Bauxite Mt 10 2,039 1,586 3,649 105.5 19 15 50
Black Coal Mt 96 11,670 30,5867 14,2277 5888 20 52 76
Copper Mt Cu 43 19.82 83.99 26.47 0.93 21 90 118
Diamond Mc 1 9.69 0 0 12.99 1 0 0
Gold t Au 150 2,966 6,646 2,669 326 9 20 29
Iron Ore Mt 36 11,800 30,340 40,133 919 13 33 77
Lead Mt Pb 19 9.15 23.12 4.74 0.509 18 45 54
Lithium kt Li 7 3,091 4,033 1,322 459 69 90 119
Manganese Ore Mt 3 33 47 5 7.510 4 6 7
Mineral Sands
Ilmenite Mt 12 16.7 50.8 10.2 1 17 51 62
Rutile Mt 10 2.4 5.2 0.8 0.2 13 28 32
Zircon Mt 10 4.5 11.7 2.0 0.5 8 22 25
Nickel Mt Ni 10 2.4 7.6 1.1 0.16 15 49 56
Rare Earths11 Mt 2 1.67 2.08 1.37 0.01812 88 109 182
Silver13 kt Ag 31 19.09 54.08 13.63 1.325 14 41 51
Tin kt Sn 1 179 348 38 7.614 24 46 51
Uranium kt U 3 266 1,483 718 6.613 40 224 333
Zinc Mt Zn 20 19.60 47.71 12.51 1.337 15 36 45