I agree entirely about the resources but it's no different to what we're doing
Actually it is. That's one of the reasons why the Chinese are being so successful in pushing the West out of Africa. African countries are getting a much deal out of the Chinese than they are getting/have got from Western countries.
Not only do they tend to get a fairer price for their minerals and natural resources, but the deals usually include training the locals as surveyors, technicians, etc. And helping to build the infrastructure such as roads hospitals etc.
Of course this is also highly beneficial to the Chinese, as they also need the roads, hospitals, etc in Africa for themselves. The big difference is that the Chinese companies and organisations in Africa tend to be owned by the Chinese state/government which means that they are all working together and they can provide a 'joined-up' package with a common goal.
Western companies are at a huge disadvantage in that respect, as they tend to work completely independently of each other. The future of Africa lies with China I fear – the West had it's chance and blew it.