Dayuhan,

If I was an Australian, i'd be worried - most of the iron ore comes from Australia. (China has enough limestone, and cement is a very heavy product, difficult to transport anyway).

I am African and I don't see how this is a bad thing. Chinese investment in copper and other minerals in Africa today (e.g. Congo DRC) is not driven by market conditions today but a long term assessment of demand trends. Demand for oil is still high.

Finally, if China has excess supply of technical expertise in construction, it is a match made in heaven - look forward to smart African governments pushing for good deals on construction. (The Ghanaian government already has done so and others are going to join shortly).