MRL 4307 and 4303 end of train helpers exit Mullan Tunnel, MT on July 30, 3006.

MRL 4307 and 4303 are the end of train helpers exiting Mullan Tunnel on July 30, 2006.

MRL SD70ACe's 4307 and 4303 are the final two units on this grain train exiting the Mullan Tunnel, MT on July 30, 2006. This train had an added SD45-2 and 5 SD70ACe's in order to climb Mullan Pass. This amounted to an added 25,000hp to get up the mountain.