Australian History By 213142@students.redlands.nsw.edu.au 1800 Big jails in Australia The big jail in Australia were Port Arthur, Port Macquarie and Northfolk Islands. 1851 Gold was found in NSW The first payable gold was found 1851 New Migrants Many people came to Australia after the first gold was found 1868 Convict traspotation ended 150,000 Convicts were transported