facts, page-3

Interesting thread, thanks for the thoughts.

Assumption 1. agree
Assumption 2. then why was the winder upgraded if the old one could pull up the same capacity? oh yes, so it's capacity & speed, the winder will have it's limit to the max speed however speed will be much quicker than it was 60 years ago.
Assumption 3. a sustainable resource needs to be found, MCO are mining several reefs, some the grades will not make the cut but IMO we only need 1 or 2 to see it cover costs to find futher sustainable resources.
Assumption 4. like computers I'm sure mining technology has come a long way, sure the enviroment was not a consideration and the miners were able to do pretty much what they like. most australian households now have a Imac or an Ipad, can you tell me how many households had one of these back then or something with equal technology?

Cheers,