Local Industry and Business
Mount Isa's industry is largely dependent on mining. Xstrata Plc operates the Mount Isa Mines lease adjacent to the city, which comprises the "Enterprise" underground copper mine, X41 underground copper mine, "Black Star Open Cut" silver-lead zinc mine, and metallurgical processing facilities. Silver-lead-zinc ore is also mined 20 km to the north at Hilton from the "George Fisher" underground mine, and the adjoining "Handlebar Hill" open cut, which is trucked back to Mount Isa for processing.
Mount Isa is in the top two of the largest copper mining and smelting operations in the country. Copper and lead are smelted on site, with copper anodes and zinc concentrate being transported 900 km to the city and port of Townsville on the east coast. The lead ingots are transported to a refinery in Britain where the silver is extracted. The mine is the most significant landmark in the area, with the stack from the lead smelter (built 1978), standing 270 m tall, visible from all parts of the city and up to 40 km out.
In 2008 a Queensland Health report found that more than 10% of children in Mount Isa had blood lead levels above World Health Organization recommendations. The mining operator Xstrata denied responsibility and stated that the town has naturally high levels of lead in the soil.
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