I believe that this class of 0-6-0's was the first class of switchers on the Frisco to get its firebox above the drivers, and therefore enjoy a larger grate area. This class utilized a crown bar firebox, which reduced boiler circulation and caused increased scaling. It was not used much (on new locomotives) after the turn of the century. 3671 retired Mar 1950 3672 retired Apr 1951 3673 retired Jan 1952 3674 retired Feb 1950 3675 retired Nov 1951 During the latter years, 3671 was a Ft Scott engine and the rest of the class could be found working in Springfield.
