Copper Tops $12,000 as Mine Woes, Tariff Trade Tighten Supplies

Copper prices topped $12,000 a ton for the first time, extending the metal’s recent bull run as mine outages add to concerns about supply of the vital industrial metal.

Benchmark prices climbed as much as 2% on the London Metal Exchange on Tuesday to $12,159.50. The metal has gained more than 35% this year and is on track for its biggest annual jump since 2009.