M sometimes issues on trains like this can get really bad really quickly so at times they need to be investigated ASAP .
Why do you think its an issue to stand these trains on a 1:66 grade ?
ECP trains do this better than conventional ones because under normal circumstances they don't run out of air . Its a huge advantage with brakes applied to have a fully charged "brake pipe" and auxiliary reservoirs , the electronics regulate the Car Control devices .
ECP/EP brakes are great. I agree.
If there are shortcomings with the system we shall soon find out.
I wonder what 'extra measures' BHP has taken. Media reports they have a network enforced speed restriction. I hope they are not operating Driver Only Operations, because that is a no brainer.