WMC turns down Xstrata takeover bid MELBOURNE (Reuters) - Oct 28 &lt;b&gt;...&lt;/b&gt; Australian copper and nickel miner WMC Resources Ltd. said on Thursday it has turned down aA\$7.4 billion (\$5.5 billion) cash takeover offer from Swiss-based Xstrata, but would consider higher bids from the company.