He was primarily responsible for converting the railroad to diesel locomotives,[1] and expanded the company into non-transportation sectors.

He was transferred to Montreal as an assistant to the vice president, and in 1943 became superintendent of the Ontario district.

[4] In 1948 Crump was a vice president at CPR; to counter lower numbers of passengers, he advocated increasing advertising and spending more money to make train travel attractive.

[7] At the time the company was mainly using diesel locomotives only in the railyards; during the following twelve years, Crump oversaw the dieselisation of the railroad.

[8] To improve profit margins Crump initiated a reorganization and expansion of the company's non-rail business.