rail access in the pilbara., page-8

surfrat,
I think the difference is that rio and bhp are opposed to sharing whereas andrew forrest is openly supportive, I would expect individual companies will have to pay for their own infrastructure to join/ get their product to the fmg infrastructure and the synergies will be achieved through MOU's and infrastructure sharing agreements and fmg charging commercial rates of access, eg , if fms or gda or whoever enter into an infrastructure access agreement, they will pay the commercial rate applicable, ie, no freebies.
Looks like gda is trading today still as deferred settlement code as gdada today .