There were Natural Gas fired locos I think, as were there atomised coal burners. The latter suffered serious pitting in the fan blades and were withdrawn very quickly. The ones in the photo ran on Bunker C, which is a molten tar like oil commonly used by ships at sea.
Bunker C must be pre-heated to become viscous, so the fuelling facilities required heaters to make the oil flow into the tenders which were also heated. During yard duties, the locomotive ran from a diesel engine located in the A unit. As with ships at sea, shutting down the turbine was a complex business. if it shut down while running, the whole fuel assembly had to be pulled apart and cleaned. Normally, they shut down the Bunker C injectors by running diesel through them first. This took time and created quite a smoke cloud.
In the time of the Turbines, Bunker C was dirt cheap, but as the cost increased, turbines gave way to Diesel Electric which was much cheaper and easier to maintain.
These are my favourite locomotive.
John