Burlington Northern 7901 leading train at Saint Cloud, MInnesota on June 7, 1981. Number 7901 is a SD40-2 built by Electro-Motive Division (EMD), builder's number 786173-74. Owned by the Colorado & Southern (C&S). Photo by Al Christianson.

Burlington Northern 7893 leading train at Saint Paul, MInnesota on October 12, 1980. Number 7893 is a SD40-2 built by Electro-Motive Division (EMD), builder's number 786173-66. Owned by the Colorado & Southern. Photo by Al Christianson.

Burlington Northern 7893 leading train at Saint Paul, MInnesota on October 12, 1980. Number 7893 is a SD40-2 built by Electro-Motive Division (EMD), builder's number 786173-66. Owned by the Colorado & Southern. Photo by Al Christianson.

Burlington Northern 7880 leading train at Saint Paul, MInnesota on December 1, 1980. Number 7880 is a SD40-2 built by Electro-Motive Division (EMD), builder's number 786173-47. Photo by Al Christianson.

Burlington Northern 7861 at Saint Paul, Minnesota on March 12, 1981. Number 7861 is an SD40-2 built by Electro-Motive Division (EMD), builder's number 786001-6. Photo by Al Christianson.

Burlington Northern 7856 in Northtown Yard at Minneapolis, Minnesota on February 24, 1981. Number 7856 is an SD40-2 built by Electro-Motive Division (EMD), builder's number 786001-1. Photo by Al Christianson.

Burlington Northern 7842 leading coal train in Minneapolis, Minnesota on February 8, 1981. Number 7842 is an SD40-2 built by Electro-Motive Division (EMD), builder's number 776057-23. Photo by Al Christianson.

Burlington Northern diesel locomotive 7811 leading an eastbound coal train on Crawford Hill near Crawford, Nebraska on June 5, 1981. Number 7811 is an SD40-2 built by Electro Motive Division (EMD), builder's number 766070-5. Photo by Howard Patrick.

Burlington Northern diesel locomotive 7224 leading an eastbound coal train on Crawford Hill near Crawford, Nebraska on June 5, 1981. Number 7224 is an SD40-2 built by Electro Motive Division (EMD), builder's number A3933. Photo by Howard Patrick.

Burlington Northern diesel locomotive 7210 leading helper set on a Midwest Energy Services Company (IPSX) eastbound coal train on Crawford Hill near Crawford, Nebraska on June 5, 1981. Number 7210 is an SD40-2 built by Electro Motive Division (EMD), builder's number A3919. BN 7204, builder's number A3806. BN 7204, builder's number A3806, is next ahead in the helper consist. Photo by Howard Patrick.