The top 50 biggest mining companies in the world
Despite gold's price slump, strong copper and iron ore prices lifted MINING.COM's ranking of the world's 50 most valuable miners to a new record high of $1.35 trillion.
Researchers at Pacific Northwest National Laboratory in the US have increased by 5% the conductivity of copper wire used in vehicle motor components. According to the scientists - who partnered with General Motors to test out the souped-up copper wire...
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