i am planning to devote significant space for a servicing terminal and am curious about those tall smoke stacks that one often sees attached to the HO scaled model roundhouse/machineshops. i find the stacks architecturally appealing and pleasing to my eye, BUT . . . What is it that is burned creating the need to disperse the exhaust? With what will i supply the facility for whatever that is? Am i bringing it in via hopper, gondola, tank car or something else? Any (well actually all) response from those with far more knowledge than i will be appreciated . . . thanks
Whit