Just some more clarification:
The main reason I think we will see a break upwards rather than upwards has to do with the increasing gradient and the rate of change of the gradient.
I believe that the increasing gradient also carries some sort of "momentum" that is very hard to turn around. The gradient has been increasing ever since the bubble popped, if it would start decreasing again that would imply that the bubble pops a second time! So in my view, considering all of the positive developments and the historical support of mining costs, a second bubble popping is an impossibility.
Regards,
Nic