The state of South Australia has Australia's principal deposits of iron ore, plus limestone and dolomite, all major raw materials for Australia's expanding steel industry. German migrant Dick Schroeder, 35, a percussion driller. He drills holes for blasting charges. He came to Australia in 1956 from Deiderode, near Gottingen. He earns 35 pounds a fortnight, pays 3 pounds, 1 shilling a fortnight rent for his Iron Knob house