20 Cents - Elizabeth II 4th Portrait - Australian Mining

Part of the Royal Australian Mint's ongoing themed circulation series, this 20-cent issue commemorates the mining industry at a moment when Australia's resources boom — driven largely by Chinese demand for iron ore and coal — was already beginning to cool after a decade of record export revenues. The Pilbara and Hunter Valley operations that defined that era were generating roughly 19% of GDP at the boom's peak in the early 2010s.