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The increases are seen as an indicator of strength, though they might fuel more inflation.
Copper has long been seen as an economic predictor. So why are prices dipping, and what are the implications?
Copper, especially, is a key ingredient in electric cars, wind turbines and batteries. Suppliers are not ready to meet the demand.
The Missouri Department of Transportation spent almost $1 million last year on repairing street lights caused by thefts of copper wire.
Copper and aluminum from the Tokyo-based company went into products at about 200 companies.
Millions of dollars worth of valuable metals end up being flushed down the drain, some coming from our own bodies.
Glencore, Anglo American and BHP Billiton hoped that diversifying would work.
From coffee to copper to corn, the price of commodities has fallen over the past year.
Exports from big states like Texas, California and Michigan have soared since the 1990s when the North American Free Trade Agreement opened U.S. markets to Mexico. But not every state has been as savvy promoting cross-border trade.
Shares of BHP Billiton are down this morning, after the mining giant saw profits fall for the first time in three years.