Copper Falls Most in 12 Weeks on Signs China Use May Ebb

Copper futures fell the most in 12 weeks after surging interest rates eroded the outlook for demand in China, the world’s biggest user of industrial metals.

The benchmark money-market rate jumped the most since July as China’s central bank refrained from adding funds to markets. Copper also slumped after the nation’s banks tripled the amount of bad loans written off in the first half and data yesterday showed employers in the U.S. hired fewer workers last month than estimated by economists.