Fireless Porter locomotive, narrow gauge

Shown below is a 'compressed air' locomotive on display at the Homestake Mine in Lead SD.


The photo source is Wikimedia/Wikipedia, and you can view higher resolution images here: [commons.wikimedia.org]

I have not been able to find a source that identifies the track gauge, but this page says the whole locomotive is only 5ft 3in wide, so it obviously qualifies as narrow gauge. Limited additional details are also at that page. Note the dual piston cylinders on this side! It may be that the 'low pressure' side had dual cylinders, and the 'high pressure' side has a single cylinder, but I don't know that.

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- Graham



Edited 2 time(s). Last edit at 04/29/2020 07:32AM by Rader Sidetrack.