The LME copper cash price saw a two percent drop on June 4, 2012, landing at $7,363 per metric ton and making it the biggest mover of the day on global copper markets.
Also on the LME, the 3-month price of copper fell 1.8 percent to $7,365 per metric ton.
The prices of US copper producer grades 122 and 110 weakened by 1.5 percent, while the US copper producer grade 102 price declined 1.4 percent.
Asian copper prices weakened as well.
The Japanese copper cash price saw essentially no change for the fifth day in a row, remaining below $8,200 per metric ton.
Chinese copper prices, meanwhile, were down for the day.
Chinese copper wire ended the day after a two percent drop on June 4, 2012. The Chinese copper bar price fell two percent on Monday. The Chinese copper cash price saw a 1.9 percent decline, while the price of Chinese bright copper scrap closed Monday with a 1.3 percent decline, halting its two-day flat run.