In April 2007, sympathetic to the interests of its 'employees', the 'management' of the Consolidated Shales Mining Company helped the Consolidated Shales Narrow Gauge Society to obtain a 'Caradoc' type of live steam locomotive from Accucraft UK, together with a set three Vale of Rheidol design coaches from the Garden Railway Centre in Cheltenham, UK. - In order to comply with the Consolidated Shales Mining Company's numbering system, the locomotive has been numbered '4138' and named 'Little Mo' after the wife of the 'Chairman' of the mining company. The two 'Tourist' brake coaches that the society owns have been numbered '8660' and '8662' respectively, and the third carriage, an open saloon, has been numbered '8661'.

After a temporary agreement between the 'mining company' and the 'society', permanent permission came in June 2007 for the 'society' to run its locomotives and rolling stock on the 'company's' narrow gauge heavy-haul railway on dates agreed in advance between the two parties. - This agreement was also extended at the time to all members and guests of the Association of 16mm Narrow Gauge Modellers.

On 'society' open days, regular trains convey visitors and guests from the platform on the jetty track at Harrison Point to the mine at Coolamusta. But as there are no platforms at the mine, passengers have to remain on the train for the return journey.

There are restrictions that the 'society' has to face when running on the 'company's' railway. - Firstly there are no run round facilities at the Coolamusta Mine, and secondly, locomotives in steam are prohibited from using the the Loadout Track at the mine, and the approaches to the Car-Dumper at Harrison Point. - The Consolidated Shales Mining Company again aware of the 'society's' needs, commissioned the building of two match cars now numbered '6668' and '6669'. These two match cars are named 'BRYANT' and 'MAY' respectively, and each one forms coupling facilities between the locomotives that the 'company' provides to release the 'society's' stock at each end of the line on running days.