Mud Bay Logging Company

[2] Operations were in the Mud Bay, Thurston County, Washington area, harvesting timber from the Black Hills, hauling it out by logging railroad, and rafting the timber by water from a Mud Bay log dump to mills on Puget Sound.

[3][4][5] The railroad ran west from Mud Bay to Summit Lake, about halfway to McCleary, Washington.

[1] By 1918, in the Black Hills, the line run as far south as section 20 or 27 of township 17 north, range 3 west—almost as far as Littlerock.

It became a Weyerhaeuser Timber Company logging locomotive after Mud Bay dissolved, and was operated at Klamath Falls, Oregon.

[3][4] The timberlands worked by Mud Bay have become part of 100,000-acre (40,000 ha) Capitol State Forest, a state-managed protected area including multi-use forest where logging continues but with modern forestry practices.