APE-85 Mount Isa Photograph Album 1935-1937
Mount Isa, Queensland.
Mount Isa is situated next to the Selwyn Ranges on the Leichhardt River. Mount Isa owes its prosperity to the huge Mount Isa Mine, the world's largest single producer of copper, silver, lead and zinc. In 1923 John Campbell Miles found a silver-lead ore outcrop and made a claim for two mining leases. Mount Isa Mines took over operations in 1924. This rich deposit is still producing high volumes of ore and is classed as one of the world's great mines.
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Early 1935 for two reasons, there is water in the river and Mines Power Station has only two stacks and additional boiler and turbine was added throughout 1935. To the right the spray ponds are in use. This was hot water returned from the steam condensers on the e exhaust side of the turbine. The condensing of the steam creates a lower pressure and increases the flow through the turbine creating a much higher efficiency. This hot water is sprayed in the air to cool it and then repeat the cycle. These were replaced by Marley Cooling Towers which were more efficient. The water vapour from Marley Cooling Towers is commonly used by media when reference is being made to emissions from power stations.