The little 0-4-0T Vulcan at Knott's was 24" gauge (c/n 1002-12/1906), with 7x12 cylinders and 24" drivers. Built new as #3 for P. Welch & Co. of Seattle, WA. It was one of four identical Vulcan 0-4-0Ts (Welch #4 c/n 1003-12/1906; #5 c/n 1011-12/1906 and #6 c/n 1012-12/1906).
The #3 became West End Chemical Co. at Hanksite, CA in 1914. This 3 mile Borax hauling line was called the Gravel Banks & Crystal Lake RR. The name Hanksite was later changed to West End. West End is on the west side of Searles (Dry) Lake, just south of Trona. The #3 was used to haul dried salt crystal material from the salt wells and evaporating basins on Searles Lake to the processing plant at West End. The miners extracted borax, potash, soda ash and other chemicals. When the #3 was abandoned in the desert, the lettering "P. Welch & Co." could still be read on her tank when Walter Knott acquired her.
The little 4-wheel 1.5 yard capacity ore cars displayed with "Betsy" on a side street were built by Western Wheeled Scrapper Co. of Denver. The Searles Lake monorail of the American Magnesium Co. was also nearby at Trona.