Found this regarding copper following falls on MTH and KDR,
"(Reuters) - London copper edged lower on Tuesday on signs of flagging growth in top metals consumer China, though prices were supported by enduring hopes the European Central Bank (ECB) will this week kick off a round of global easing."
http://in.reuters.com/article/2012/09/04/us-markets-metals-idINBRE88202Q20120904
