Army service No. 10 was built in
Pittsburgh, Pennsylvania, by the
H.K. Porter in August 1942, for the
United States Transportation Corps (USATC), originally No. 5001, it served in the Army depot in
Tracy, California.
Industrial service After
World War II, in 1947, No. 5001 was sold to the
Granite Rock Company of
Watsonville, California and given the number 10. The locomotive worked at the company's A.R. Wilson quarry in
Aromas, California until 1960, when it was
replaced by diesel locomotives and taken out of service. On August 29, 1997, No. 10 was operated by an all-female crew to mark the anniversary of the ratification of the
19th. Amendment. The following year, No. 10 was taken out of service for extensive boiler repairs, before returning on April 11, 2015. L In July 2025, No. 10 was returned to service - after not operating since 2019 due to cylinder issues and the valve bushings being reworked. == References ==