The implementation of a federal rule aimed at protecting mine workers’ health was delayed indefinitely.

After a year of trial and error, Liyang Chen had managed to whittle down a metallic wire into a microscopic strand half the width of an E.coli bacterium — just thin enough to allow a trickle of ...

Recent headlines including President Trump's 50% tariff on copper and the Pentagon's deal to buy a stake in rare earth elements miner MP Materials highlight the importance of the metals market in the ...