migration to australia By Jack T Period: Jan 1, 1901 to Oct 1, 2014 australian migration Dec 23, 1901 imigratin restriction Jan 1, 1939 global world war Oct 1, 1946 commitiee commitiee was started Jan 1, 1949 construction in 1949 225 kilometers of tunnels, pipelines were constructed Jan 1, 2014 first refugees arivved