I built a model steam engine and here is a link to the first test run on compressed air.
https://youtu.be/jnl6TSfGmcQ
I have a few small things to finish and I also plan to order a boiler kit to Power it.
I thought about trying to incorporate it into the sand quarry, maybe run a conveyor belt or a crusher that I would like to also build.
Anyone have other thoughts or perhaps seen photos of prototype operations that would have used steam in a similar setting?
Jim