A westbound BNSF coal train loops out of Austin, Montana, while climbing Mullan Pass west of Helena on October 7, 2020. Four Montana Rail Link EMD SD70ACes on the mid-train manned helper grind upgrade, while one of the BNSF rear DPU units rumbles by in the foreground. Passing through another huge curve, the train will change directions again, when the head end of the train emerges from Iron Ridge cut, seen above in the background in front of the MRL helpers.
