"Kazakhmys soared 245p to £17.80 after Eurasian Natural Resources Corporation revealed that it was considering a bid for its fellow Kazakhstani miner. The talks are not believed to have moved beyond the informal stages but the company was forced into making an announcement by the Takeover Panel after growing market talk of a possible deal."
http://www.telegraph.co.uk/money/main.jhtml?xml=/money/2008/03/13/cxmktrep113.xml