WASHINGTON (Reuters) -U.S. President Donald Trump on Friday reversed a Biden-era air pollution rule that had imposed stricter limits on emissions from copper smelters. The copper rule, finalized in ...

President Donald Trump on Friday reversed an air pollution regulation introduced during the Biden administration. The rule, which was aimed at reducing emissions from copper smelters, has been ...

BEIJING, Jan 31 (Reuters) - China's Nonferrous Metals Industry Association (CNIA) said late on Monday it had advised copper smelters to cut production and postpone new projects amid tightening raw ...

President Trump signed a proclamation granting an exemption for U.S. copper smelters, including Freeport-McMoRan (NYSE:FCX), from certain Biden-era air pollution rules that had imposed stricter limits ...