The UP 3999 was rebuilt from an SD24 as a prototype for a possible rebuild program by the Union Pacific, making them similar to the SD40s. The rebuild effort included a constant speed EMD 16-645 3... (more)
S&S Shortline Leasing SD10 No. 550 basks in the warm sunshine at Provo Yard on July 8, 2014. The unit was built by EMD as Milwaukee Road SD7 No. 2217 in Oct. 1953. It was later rebuilt and upgrade... (more)