Thank you for providing us all the info.

1.) In if step a few years into the future. It's not all about the China anymore. Middle class in other countries is expanding. More and more people are moving to towns. So... It's true that mining sector will get hurt it the bubble burst but it's IMO it won't have such a huge long term affect.

2.)

http://www.riotinto.com/documents/cesco_presentation_a_harding_170412.pdf

GLTA