MK S6 Slug

Built by ALCo, MK

Track gauge

1,435 mm

Standard gauge

Overview of the MK S6 Slug

Discover the classic ALCo S6 Slug locomotive, a powerful piece of industrial rail history.

Built by ALCo and MK, this distinctive Slug type, model S6 Slug, boasts a standard gauge of 1435 mm.

Its operational history includes service with the Columbia and Cowlitz Railway in the United States, where it was classified as a CLC S6 Slug.

This robust locomotive is a testament to reliable engineering and industrial application in rail transport.

	Value	Imperial / US
Built by	ALCo, MK
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in

Railway companies that have operated the S6 Slug, with the class designation used by each of them.

Operator	Class	Country
Columbia and Cowlitz Railway	CLC S6 Slug	United States