While there's been no suggestion of wrongdoing in this month’s squeeze, the LME has a rich history of wild price moves when markets are over- or undersupplied.
A federal appeal court on Friday questioned whether it had the power to override an act of Congress that gave Rio Tinto land in Arizona for its Resolution copper mine.
The London copper contract has been sucked into a stocks vacuum after the amount of available metal in warehouse system sank to the lowest since 1974, writes Andy Home.