NBEC 6904 was an SD40, formerly CN 5021 (class GF-30d). It was built in 1968, retired from CN on April 30, 1998, and rebuilt by Alstom by the spring of 1999 for NBEC. 6904 spent some time on the Sydney Coal Railway (former Devco) in Nova Scotia in July and August 2003 to evaluate its use with their trains.
