A Weaver, IA, to Sterling, CO, unit train of nitrogen slowly rolls west on the McCook Sub. The 110-car train makes lots of noise as it cuts through Exeter. The 2nd unit isn't helping out at all, so the head and DP units have a tough time with this heavy train as they work west. The Koch Ag & Energy Solutions, LLC plant in Weaver is located in far eastern Iowa on the BNSF K-line.
