Johannesburg World Cities Research Network. In 2011, the population of the city of Johannesburg was 4,434,827, making it the most populous city in South Africa. In the same year, the population of Johannesburg's urban agglomeration was put at 7,860,781. The land area of the municipal city () is large in comparison with those of other major cities, resulting in a moderate population density of . The city was established in 1886 following the discovery of gold on what had been a farm. The city is commonly interpreted as the modern day El Dorado due to the extremely large gold deposit found
Westrail S class at Kelso. The S class locomotives entered service in June 1998 hauling ore and mineral trains in South West Western Australia. All were in service by November 1998 All were included in the sale of Westrail to Australian Railroad Group in December 2000, with the class redesignated as the 3300 class. In June 2006, all were included in the sale of Australian Railroad Group's Western Australian operation to QR National. Westrail S class The S class are a class of diesel locomotives built by Clyde Engineering, Forrestfield for Westrail in 1998. The S class were the first dual-cab locomotives purchased