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Thanks to high commodity prices, vacant homes in poorer neighbourhoods are quickly stripped of their aluminium sidings and copper fixtures.
ECONOMIST: America's property crisis
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The force said recent price rises of copper and aluminium were thought to be behind the spate of incidents.
BBC: NEWS | UK | England | Southern Counties | Price rises 'behind metal thefts'
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Failure to use the latest three-dimensional modelling software meant nobody anticipated the effect of using lightweight aluminium wiring rather than copper, which is to make bends in the wiring looms bulkier.
ECONOMIST: Airbus and EADS
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Platinum and palladium, as well as other industrial metals such copper and aluminium, are well down from their highs earlier in the year as markets factored in softer global economic conditions, in turn weighing on future demand expectations.
FORBES: PGMs Hit Multi-Month Highs On Fears S. African Labor-Related Supply Issues May Spread
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They have worked with oxides of iron, aluminium, zirconium, titanium and copper.
ECONOMIST: Bunker-busting
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Citigroup estimates that the spot price is below the production costs for 15% of copper producers, 25% of aluminium producers, 50% of zinc producers, 30% of nickel producers and 10% of iron-ore producers.
ECONOMIST: Fortunes in the mining business come and go faster than ever