I agree with you on cost and cleaning, coal would be the way to go. If the shop was built 10 years ago I'd probably go that route... Atleast then I would be guaranteed a decade of use before fear of coal being banned. Also we now have carbon tax so never know what our idiot of a PM will do next.I think your going to find that the western coal is going to be much less costly to burn per ton and it will
have much less ash and smoke.
Go over to you tube and search AHS S130 in Montana to see the fellow that burns Montana sub bituminous
stoker coal in his AHS S130.
I wish the Iron Fireman Company was still making coal stokers as they were able to burn the western coal with
no issues using their cast iron underfed /tuyer pot stokers.
I have attached a file showing the Axeman Anderson Anthratube boilers for you.
The Axeman Anderson Anthratube Coal Stoker Boiler uses an induced draft combustion system with a traveling coal grate the feeds the coal and also removes the spent coal ash at the same time.