Burlington Northern SD40-2 Number 6731, built March 1976; SD40-2 Number 6739, built March 1976; SD40-2 Number 7842, built July 1978 as Colorado & Southern Number 7842; at Saint Cloud, Minnesota with Burlington Northern coal hoppers on February 17, 1981. Photo by Al Christianson.

Burlington Northern SD45 Number 6543, built in November 1971; SD45 Number 6476, built in July 1970; SD45 Number 6454, former Great Northern Number 424; SD40-2 Number 8065, built in November 1979; passing Hoffman Avenue interlocking at Dayton's Bluff, Minnesota with an westbound piggyback freight on February 29, 1982. Photo by Al Christianson.

Burlington Northern Type U30C Number 5812, built September 1973; C30-7 Number 5598, built June 1979; and a U30C (number unknown); with westbound empty utility bathtub coal gondolas about six miles west of Mullen, Nebraska on August 23, 1981. Photo by Al Christianson.

Burlington Northern Type U30C Number 5812, built September 1973; C30-7 Number 5598, built June 1979; and a U30C (number unknown); with westbound empty utility bathtub coal gondolas west of Mullen, Nebraska on August 23, 1981. Photo by Al Christianson.

Burlington Northern Type U30C Number 5812, built September 1973; C30-7 Number 5598, built June 1979; and a U30C (number unknown); passing Alliance division 1st Subdivision milepost 269.5 with westbound empty utility bathtub coal gondolas at Mullen, Nebraska on August 23, 1981. Photo by Al Christianson.

Burlington Northern Type U30C Number 5812, built September 1973; C30-7 Number 5598, built June 1979; and a U30C (number unknown); with westbound empty utility bathtub coal gondolas about four miles west of Mullen, Nebraska on August 23, 1981. Photo by Al Christianson.

Burlington Northern Type U30C Number 5812, built September 1973; C30-7 Number 5598, built June 1979; and a U30C (number unknown); with westbound empty utility bathtub coal gondolas east of Alliance, Nebraska on August 23, 1981. Photo by Al Christianson.

Burlington Northern Type U33C Number 5764, former S J Groves Number 507; U33C Number 5750, built August 1971; passing Hoffman Avenue interlocking in Daytons Bluff, Minnesota on March 11, 1980. Photo by Al Christianson.

Burlington Northern Type U33C Number 5764, former S J Groves Number 507; U33C Number 5750, built August 1971; SD40-2 Number 6910, former Number 6374, built April 1973; U33C Number 5712, former Great Northern Number 2542; passing Hoffman Avenue interlocking in Daytons Bluff, Minnesota with Corn Products (CCLX) airslide covered hopper Number 50062 on March 11, 1980. Photo by Al Christianson.

Burlington Northern Type U33C Number 5764, former S J Groves Number 507; U33C Number 5750, built August 1971; SD40-2 Number 6910, former Number 6374, built April 1973; U33C Number 5712, former Great Northern Number 2542; passing Hoffman Avenue interlocking in Daytons Bluff, Minnesota with westbound freight on March 11, 1980. Photo by Al Christianson.